Measurement of Automotive Nonvolatile Particle Number Emissions within the European Legislative Framework: A Review

REFERENCES

• ACEA . 1999 . ACEA Programme on Emissions of Fine Particles from Passenger Cars, December 1999 , Brussels , Belgium : ACEA .
   Google Scholar
• Amann , C. , Stivender , D. , Plee , S. and MacDonald , J. 1980 . Some Rudiments of Diesel Particulate Emissions . SAE Technical Paper 800251
   Google Scholar
• Andersson , J. and Clarke , D. 2004 . UN-GRPE PMP Phase 3: Interlaboratory Correlation Exercise: Framework and Laboratory Guide . Available at: http://www.unece.org/trans/doc/2005/wp29grpe/PMP-2005-14-01e.pdf
   Google Scholar
• Andersson , J. , Clarke , D. and Watson , J. 2004 . UK Particulate Measurement Programme (PMP): A Near US 2007 Approach to Heavy-Duty Diesel Particulate Measurements—Comparison with the Standard European Method . SAE Technical Paper 2004-01-1990
   Google Scholar
• Andersson , J. , Giechaskiel , B. , Munoz-Bueno , R. and Dilara , P. 2007 . Particle Measurement Programme (PMP): Light-Duty Inter-Laboratory Correlation Exercise (ILCE_LD)—Final Report (EUR 22775 EN) GRPE-54-08-Rev.1 . Available at: http://publications.jrc.ec.europa.eu/repository/bitstream/111111111/429/2/7386%20-%20PMP_LD_final.pdf
   Google Scholar
• Andersson , J. , Mamakos , T. , Martini , G. and Giechaskiel , B. 2010 . Particle Measurement Programme (PMP) Heavy-Duty Inter-Laboratory Correlation Exercise (ILCE_HD) Final Report . Available at: http://publications.jrc.ec.europa.eu/repository/bitstream/111111111/15075/1/pmp%20hd%20validation%20exercise%20final%20report.pdf
   Google Scholar
• Andersson , J. , Wedekind , B. , Hall , D. , Stadling , R. and Wilson , G. 2001 . DETR/SMMT/CONCAWE Particulate Research Programme: Light Duty Results . SAE Technical Paper 2001-01-3577
   Google Scholar
• Bagley , S. , Baumgard , K. , Gratz , L. , Johnson , J. and Leddy , D. 1996 . Characterization of Fuel and Aftertreatment Device Effects on Diesel emissions. Research Report No. 76 . HEI September 1996
   Google Scholar
• Berg , W. 2003 . “ Legislation for the Reduction of Exhaust Gas Emissions ” . In Handbook of Environment Chemistry Vol. 3 , 175 – 253 . Part T Series Anthropogenic Compounds, Traffic and Environment, Springer
   Google Scholar
• Bergmann , M. , Kirchner , U. , Vogt , R. and Benter , T. 2009 . On-Road and Laboratory Investigation of Low-Level PM Emissions of a Modern Diesel Particulate Filter Equipped Diesel Passenger Car . Atmos. Environ. , 43 : 1908 – 1916 .
   Web of Science ®Google Scholar
• Bérubé , K. , Jones , T. , Williamson , B. , Winters , C. , Morgam , A. and Richards , R. 1999 . Physicochemical Characterization of Diesel Exhaust Particles: Factors for Assessing Biological Activity . Atmos. Environ. , 33 : 1599 – 1614 .
   Web of Science ®Google Scholar
• Bikas , G. and Zervas , E. 2007 . Regulated and Non-Regulated Pollutants Emitted During the Regeneration of a Diesel Particulate Filter . Energy Fuels , 21 : 1543 – 1547 .
   Web of Science ®Google Scholar
• Biswas , S. , Verma , V. , Schauer , J. , Cho , A. and Sioutas , K. 2009a . Oxidative Potential of Semi-Volatile and Non Volatile Particulate Matter (PM) from Heavy-Duty Vehicles Retrofitted with Emission Control Technologies . Environ. Sci. Technol. , 43 : 3905 – 3912 .
   PubMed Web of Science ®Google Scholar
• Biswas , S. , Verma , V. , Schauer , J. and Sioutas , K. 2009b . Chemical Speciation of PM Emissions from Heavy-Duty Diesel Vehicles Equipped with Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR) Retrofits . Atmos. Environ. , 43 : 1917 – 1925 .
   Web of Science ®Google Scholar
• Bosteels , D. , May , J. , Karlsson , H. and de Serves , C. 2006 . Regulated and Non-Regulated Emissions from Modern European Passenger Cars . SAE Techincal Paper 2006-01-1516
   Google Scholar
• Braisher , M. , Stone , R. and Price , P. 2010 . Particle Number Emissions from a Range of European Vehicles . SAE Technical Paper 2010-01-0786
   Google Scholar
• Braun , A. , Huggins , F. , Seifert , S. , Ilavsky , J. , Shah , N. Kelly , K. 2004 . Size-Range Analysis of Diesel Soot with Ultra-Small Angle X-Ray Scattering . Combust. Flame , 137 : 63 – 72 .
   Web of Science ®Google Scholar
• Burtscher , H. 2005 . Physical Characterization of Particulate Emissions from Diesel Engines: A Review . J. Aerosol Sci. , 36 : 896 – 932 .
   Web of Science ®Google Scholar
• Campbell , B. , Peckham , M. , Symonds , J. , Parkinson , J. and Finch , A. 2006 . Transient Gaseous and Particulate Emissions Measurements on a Diesel Passenger Car Including DPF Regeneration . SAE Technical Paper 2006-01-1079
   Google Scholar
• CARB . 2010 . California Air Resource Board Public Workshop on Proposed Revisions to the Low-Emission Vehicle Program: Emission Limits for Particle Mass, Solid Particle Number, and Black Carbon . Available at: http://www.arb.ca.gov/msprog/levprog/leviii/meetings/051810/lev_iii_pm_and_bc_v2.pdf, http://www.arb.ca.gov/msprog/levprog/leviii/meetings/111610/leviii_pm_update_for_nov_16_workshop.pdf
   Google Scholar
• Casati , R. , Scheer , V. , Vogt , R. and Benter , T. 2007 . Measurement of Nucleation and Soot Mode Particle Emission from a Diesel Passenger Car in Real World and Laboratory In Situ Dilution . Atmos. Environ. , 41 : 2125 – 2135 .
   Web of Science ®Google Scholar
• Chase , R. , Duszkiewicz , G. , Richert , J. , Lewis , D. , Matti , M. and Xu , N. 2004 . PM Measurement Artifact: Organic Vapor Deposition on Different Filter Media . SAE Technical Paper 2004-01-0967
   Google Scholar
• Cheung , K. , Andrea , P. , Ntziachristos , L. , Samaras , Z. , Cassee , F. Gerlofs , M. 2009 . Chemical Characteristics and Oxidative Potential of Particulate Matter Emissions from Gasoline, Diesel, and Biodiesel Cars . Environ. Sci. Technol. , 43 : 6334 – 6340 .
   PubMed Web of Science ®Google Scholar
• Collings , N. and Graskow , B. 2000 . Particles from Internal Combustion Engines—What We Need to Know . Phil. Trans. R. Soc. Lond. A , 358 : 2611 – 2623 .
   Web of Science ®Google Scholar
• Ciambelli , P. , Palma , V. , Russo , P. and Vaccaio , S. 2005 . Issues on Soot Removal from Exhaust Gases by Means of Radial Flow Ceramic Traps . Chem. Eng. Sci. , 60 : 1619 – 1627 .
   Web of Science ®Google Scholar
• Commission Regulation 692/2008 . Available at: http://eurlex.europa.eu/LexUriServ/LexUriServ.do?uri=CELEX:32008R0692:en:NOT
   Google Scholar
• Commission Regulation 715/2007 . Available at: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2007:171:0001:0016:EN:PDF
   Google Scholar
• CONCAWE . 1998 . A Study of the Number, Size & Mass of Exhaust Particles Emitted from European Diesel and Gasoline Vehicles Under Steady-State and European Driving Cycle Conditions . Report no. 98/51, Brussels, Belgium
   Google Scholar
• Copert . 2007 . COPERT 4 Computer Programme to Calculate Emissions from Road Transport—Users Manual, ETC-ACC (European Topic Centre on Air and Climate Change) . Available at: http://www.emisia.com/documentation.html
   Google Scholar
• Czerwinski , J. , Zimmerli , Y. , Mayer , A. , Heeb , N. , Lemaire , J. D’Urbano , G. 2009 . Testing of Combined DPF+SCR Systems for HD-Retrofitting-VERTdePN . SAE Technical Paper 2009-01-0284
   Google Scholar
• De Fillipo , A. and Maricq , M. 2008 . Diesel Nucleation Mode Particles: Semivolatile or Solid? . Environ. Sci. Technol. , 42 : 7957 – 7962 .
   PubMed Web of Science ®Google Scholar
• Dekati . 2010 . Dekati Engine Exhaust Diluter (DEED) . Available at: http://www.dekati.com/cms/deed
   Google Scholar
• Deutsche Umwelthilfe . 2011 . Press Release . Available at: http://www.duh.de/uploads/media/Benzinmotoren-Partikel_2011-07-07.pdf
   Google Scholar
• di Stasio , S. , Konstandopoulos , A. and Kostoglou , M. 2002 . Cluster–Cluster Aggregation Kinetics and Primary Particle Growth of Soot Nanoparticles in Flame by Light Scattering and Numerical Simulations . J. Colloid Interface Sci. , 247 : 33 – 46 .
   PubMed Web of Science ®Google Scholar
• DieselNet . 2003 . Emission Standards, Switzerland . Available at: http://www.dieselnet.com/standards/ch/#const
   Google Scholar
• Donaldson , K. , Li , X. and MacNee , W. 1998 . Ultrafine (Nanometre) Particle Mediated Lung Injury . J. Aerosol Sci. , 29 : 553 – 560 .
   Web of Science ®Google Scholar
• Dwyer , H. , Ayala , A. , Zhang , S. , Collins , J. , Huai , T. Herner , J. 2010 . Emissions from a Diesel Car During Regeneration of an Active Diesel Particulate Filter . J. Aerosol Sci. , 41 : 541 – 552 .
   Web of Science ®Google Scholar
• Eastwood , P. 2008 . Particulate Emissions from Vehicles , SAE International and John Wiley & Sons, Ltd., West Sussex. UK .
   Google Scholar
• Ecomesure . 2010 . RS-PMP, Real-Time Particle Counting for Engine Exhaust . www.ecomesure.com
   Google Scholar
• EEPS . 2005 . Engine Exhaust Particle Sizer™ Spectrometer Model 3090 . Available at: http://www.tsi.com/en-1033/products/2208/engine_exhaust_particle_sizer%E2%84%A2_spectrometer.aspx
   Google Scholar
• EPA . 2009 . Integrated Science Assessment for Particulate Matter (Final Report). , Washington , DC : U.S. Environmental Protection Agency . EPA/600/R-08/139F, 2009 Available at: http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=216546#Download
   Google Scholar
• EPA . 2011 . Environmental Protection Agency, Part 1065—Engine Testing Procedures, Title 40—Protection of Environment , Code of Federal Regulations .
   Google Scholar
• Ferin , J. , Oberdörster , G. and Penney , D. 1992 . Pulmonary Retention of Ultrafine and Fine Particles in Rats . Am. J. Respir. Cell Mol. Biol. , 6 : 535 – 542 .
   PubMed Web of Science ®Google Scholar
• Fletcher , R. , Mulholland , G. , Winchester , M. , King , R. and Klinedinst , D. 2009 . Calibration of a Condensation Particle Counter Using a NIST Traceable Method . Aerosol Sci. Technol , 43 : 425 – 441 .
   Web of Science ®Google Scholar
• Gidney , J. , Twigg , M. and Kittelson , D. 2010 . Effect of Organometalic Fuel Additives on Nanoparticle Emissions from a Gasoline Passenger Car . Environ. Sci. Technol. , 44 : 2562 – 2569 .
   PubMed Web of Science ®Google Scholar
• Giechaskiel , B. and Bergmann , A. 2011 . Validation of 14 Used, Re-Calibrated and New TSI 3790 Condensation Particle Counters According to the UN-ECE Regulation 83 . J. Aerosol Sci. , 42 : 195 – 203 .
   Web of Science ®Google Scholar
• Giechaskiel , B. and Bergmann , A. 2012 . On-Site Checks of the Particle Number Measurement Systems with Polydisperse Aerosol . SAE Technical Paper 2012-01-0873
   Google Scholar
• Giechaskiel , B. and Stilianakis , N. 2009 . A Note on the Comparison of Particle Number Counters . Meas. Sci. Technol. , 20 : 077003
   Web of Science ®Google Scholar
• Giechaskiel , B. , Carriero , M. , Martini , G. and Andersson , J. 2009a . Heavy Duty Particle Measurement Programme (PMP): Exploratory Work for the Definition of the Test Protocol . SAE Technical Paper 2009-01-1767
   Google Scholar
• Giechaskiel , B. , Carriero , M. , Martini , G. , Bergmann , A. , Pongratz , H. and Jörgl , H. 2010b . Comparison of Particle Number Measurements from the Full Dilution Tunnel, the Tailpipe and Partial Flow Systems . SAE Technical Paper 2010-01-1299
   Google Scholar
• Giechaskiel , B. , Carriero , M. , Martini , G. , Krasenbrink , A. and Scheder , D. 2009c . Calibration and Validation of Various Commercial Particle Number Measurement Systems . SAE Technical Paper 2009-01-1115
   Google Scholar
• Giechaskiel , B. , Chirico , R. , DeCarlo , P. , Clairotte , M. , Adam , T. Martini , G. 2010a . Evaluation of the Particle Measurement Programme (PMP) Protocol to Remove the Vehicles’ Exhaust Aerosol Volatile Phase . Sci. Total Environ. , 408 : 5106 – 5116 .
   PubMed Web of Science ®Google Scholar
• Giechaskiel , B. , Cresnoverh , M. , Jörgl , H. and Bergmann , A. 2010c . Calibration and Accuracy of a Particle Number Measurement System . Meas. Sci. Technol. , 21 : 045102
   Web of Science ®Google Scholar
• Giechaskiel , B. , Dilara , P. and Andersson , J. 2008a . Particle Measurement Programme (PMP) Light-Duty Inter-Laboratory Exercise: Repeatability and Reproducibility of the Particle Number Method . Aerosol Sci. Technol. , 42 : 528 – 543 .
   Web of Science ®Google Scholar
• Giechaskiel , B. , Dilara , P. , Sandbach , E. and Andersson , J. 2008b . Particle Measurement Programme (PMP) Light-Duty Inter-Laboratory Exercise: Comparison of Different Particle Number Measurement Systems . Meas. Sci. Technol. , 19 : 095401
   Web of Science ®Google Scholar
• Giechaskiel , B. , Martinez-Lozano , P. , Alessandrini , S. , Forni , F. , Montigny , F. Fumagalli , I. 2008c . Particle Measurement Programme (PMP) Heavy Duty (HD) Inter-Laboratory Exercise: Validation Exercise Tests at JRC (Feb 08) . EU Report 23496
   Google Scholar
• Giechaskiel , B. , Massimo , C. , Bonnel , P. , Schindler , W. , Scheder , D. Bassoli , C. 2011a . PEMS Feasibility of Particulate Mass and Number Measurement with Portable Emission Measurement Systems (PEMS) for In-Use Testing . SAE Technical Paper 2011-24-0199
   Google Scholar
• Giechaskiel , B. , Munoz-Bueno , R. , Rubino , L. , Manfredi , U. , Dilara , P. De Santi , G. 2007b . Particle Measurement Programme (PMP): Particle Size and Number Emissions Before, During and After Regeneration Events of a Euro 4 DPF Equipped Light-Duty Diesel Vehicle . SAE Technical Paper 2007-01-1944
   Google Scholar
• Giechaskiel , B. , Ntziachristos , L. and Samaras , Z. 2004 . Calibration and Modeling of Ejector Dilutors for Automotive Exhaust Sampling . Meas. Sci. Technol. , 15 : 2199 – 2206 .
   Web of Science ®Google Scholar
• Giechaskiel , B. , Ntziachristos , L. , Samaras , Z. , Casati , R. , Scheer , V. and Vogt , R. 2005 . Formation Potential of Vehicle Exhaust Nucleation Mode Particles On-Road and in the Laboratory . Atmos. Environ. , 39 : 3191 – 3198 .
   Web of Science ®Google Scholar
• Giechaskiel , B. , Ntziachristos , L. , Samaras , Z. , Casati , R. , Volker , S. and Rainer , V. 2007a . Effect of Speed and Speed Transition on the Formation of Nucleation Mode Particles from a Light Duty Diesel Vehicle . SAE Technical Paper 2007-01-1110
   Google Scholar
• Giechaskiel , B. , Schindler , W. , Jörgl , H. , Vescoli , V. , Bergmann , A. and Silvis , W. 2011b . Accuracy of Particle Number Measurements from Partial Flow Dilution Systems . SAE Technical Paper 2011-24-0207
   Google Scholar
• Giechaskiel , B. , Wang , X. , Horn , H. , Spielvogel , J. , Gerhart , C. Southgate , J. 2009b . Calibration of Condensation Particle Counters for Legislated Vehicle Number Emission Measurements . Aerosol Sci. Technol. , 43 : 1164 – 1173 .
   Web of Science ®Google Scholar
• Gilham , R. and Quincey , P. 2007 . “ Particle Measurement Programme—Analysis of Errors ” . National Physical Laboratory (NPL) Report AS 17 .
   Google Scholar
• Graskow , B. , Kittelson , D. , Ahmadi , M. and Morris , J. 1999 . Exhaust Particulate Emissions from a Direct Injection Spark Ignition Engine . SAE Technical Paper 1999-01-1145
   Google Scholar
• Grimm . 2009 . Nano PMP 5.430 . Available at: www.grimm-aerosol.com
   Google Scholar
• Guo , G. , Xu , N. , Laing , P. , Hammerle , R. and Maricq , M. 2003 . Performance of a Catalyzed Diesel Particulate Filter System During Soot Accumulation and Regeneration . SAE Technical Paper 2003-01-0047
   Google Scholar
• Hall , D. and Dickens , C. 1999 . Measurement of the Number and Size Distribution of Particles Emitted from a Gasoline Direct Injection Vehicle . SAE Technical Paper 1999-01-3530
   Google Scholar
• Harris , S. and Maricq , M. 2001 . Signature Size Distributions for Diesel and Gasoline Engine Exhaust Particle Matter . J. Aerosol Sci. , 32 : 749 – 764 .
   Web of Science ®Google Scholar
• Harris , S. and Maricq , M. 2002 . The Role of Fragmentation in Defining the Signature Size Distribution of Diesel Soot . J. Aerosol Sci. , 33 : 935 – 942 .
   Web of Science ®Google Scholar
• Herner , J. , Hu , S. , Robertson , W. , Huai , T. , Chang , O. Rieger , P. 2011 . Effect of Advanced Aftertreatment for PM and NOx Reduction on Heavy Duty Diesel Engine Ultrafine Particle Emissions . Environ. Sci. Technol. , 45 : 2413 – 2419 .
   PubMed Web of Science ®Google Scholar
• Herner , J. , Robertson , W. and Ayala , A. 2007 . Investigation of Ultrafine Particle Number Measurements from a Clean Diesel Truck Using the European PMP Protocol . SAE Technical Paper 2007-01-1114
   Google Scholar
• Hosoya , M. , Kawada , Y. , Sato , S. and Shimoda , M. 2007 . The Study of NOx and PM Reduction Using Urea Selective Catalytic Reduction System for Heavy Duty Diesel Engine . SAE , Technical Paper 2007-01-1576
   Google Scholar
• Hu , S. , Herner , J. , Shafer , M. , Robertson , W. , Schauer , J. Dwyer , H. 2009 . Metals Emitted from Heavy-Duty Diesel Vehicles Equipped with Advanced PM and NOx Emission Controls . Atmos. Environ. , 43 : 2950 – 2959 .
   Web of Science ®Google Scholar
• Hueglin , C. , Scherrer , L. and Burtscher , H. 1997 . An Accurate Continuously Adjustable Dilution System (1:10 to 1:104) for Submicron Aerosols . J. Aerosol Sci. , 28 : 1049 – 1055 .
   Web of Science ®Google Scholar
• Isella , L. , Giechaskiel , B. and Drossinos , Y. 2008 . Diesel-Exhaust Aerosol Dynamics from the Tailpipe to the Dilution Tunnel . J. Aerosol Sci. , 39 : 737 – 758 .
   Web of Science ®Google Scholar
• Jing , L. 2010 . CAST Combustion Aerosol Standard . Available at: www.sootgenerator.com/
   Google Scholar
• Johnson , K. C. , Durbin , T. D. , Jung , H. , Chaudhary , A. , Cocker , D. R. Herner , J. D. 2009 . Evaluation of the European PMP Methodologies During On-Road and Chassis Dynamometer Testing for DPF Equipped Heavy-Duty Diesel Vehicles . Aerosol Sci. Technol. , 43 : 962 – 969 .
   Web of Science ®Google Scholar
• Karlsson , H. 2005 . “ Measurement of Emissions from Four Diesel Fuelled Passenger Cars Meeting Euro 4 Emission Standards ” . Sweden : Haninge . Report No. MTC 5505, AVL MTC AB, 2005/10
   Google Scholar
• Kasper , M. 2004 . The Number Concentration of Non-Volatile Particles—Design Study for an Instrument According to the PMP Recommendations . SAE Technical Paper Technical Paper 2004-01-0960
   Google Scholar
• Kasper , M. 2008 . Characterisation of the Second Generation PMP “Golden Instrument . SAE Technical Paper 2008-01-1177
   Google Scholar
• Kayes , D. and Hochgreb , S. 1999 . Mechanisms of Particulate Matter Formation in Spark-Ignition Engines. 1. Effect of Engine Operating Conditions . Environ. Sci. Technol. , 33 : 3957 – 3967 .
   Web of Science ®Google Scholar
• Khalek , I. 2009 . CRC Report: ACES Phase 1: Phase 1 of the Advanced Collaborative Emissions Study, June 2009 .
   Google Scholar
• Khalek , I. and Kittelson , D. 1995 . Real Time Measurement of Volatile and Solid Exhaust Particles Using a Catalytic Stripper . SAE Technical Paper 950236
   Google Scholar
• Khalek , I. , Bougher , T. and Jetter , J. 2010 . Particle Emissions from a 2009 Gasoline Direct Injection Engine Using Different Commercially Available Fuels . SAE Technical Paper 2010-01-2117
   Google Scholar
• Khalek , I. , Kittelson , D. and Brear , F. 1999 . The Influence of Dilution Conditions on Diesel Exhaust Particle Size Distribution Measurements . SAE Technical Paper 1999-01-1142
   Google Scholar
• Khalek , I. , Kittelson , D. , Graskow , B. , Wei , Q. and Brear , F. 1998 . Diesel Exhaust Particle Size: Measurements, Issues and Trends . SAE Technical Paper 980525
   Google Scholar
• Kirchner , U. , Vogt , R. and Maricq , M. 2010 . Investigation of EURO-5/6 Level Particle Number Emissions of European Diesel Light Duty Vehicles . SAE Technical Paper 2010-01-0789
   Google Scholar
• Kirchner , U. , Scheer , V. , Vogt , R. and Kägi , R. 2009 . TEM Study on Volatility and Potential Presence of Solid Cores in Nucleation Mode Particles from Diesel Powered Passenger Cars . Atmos. Environ. , 40 : 55 – 64 .
   Google Scholar
• Kittelson , D. 1998 . Engines and Nanoparticles: A Review . J. Aerosol Sci. , 29 : 575 – 588 .
   Web of Science ®Google Scholar
• Kittelson , D. and Johnson , J. 1991 . Variability in Particle Emission Measurements in the Heavy Duty Transient Test . SAE Technical Paper 910738
   Google Scholar
• Kittelson , D. , Reinertsen , J. and Michalski , J. 1991 . Further Studies of Electrostatic Collection and Agglomeration of Diesel Particles . SAE Technical Paper 910329
   Google Scholar
• Kittelson , D. , Watts , W. and Johnson , J. 2002 . “ Diesel Aerosol Sampling Methodology ” . 2002, Univ. Minnesota. Final Report No CRC-E43
   Google Scholar
• Kittelson , D. , Watts , W. and Johnson , J. 2006a . On-Road and Laboratory Evaluation of Combustion Aerosols. Part 1: Summary of Diesel Engine Results . J. Aerosol Sci. , 37 : 913 – 930 .
   Web of Science ®Google Scholar
• Kittelson , D. , Watts , W. , Johnson , J. , Schauer , J. and Lawson , D. 2006b . On-Road and Laboratory Evaluation of Combustion Aerosols Part 2: Summary of Spark Ignition Engine Results . J. Aerosol Sci. , 37 : 931 – 949 .
   Web of Science ®Google Scholar
• Kittelson , D. , Watts , W. , Johnson , J. , Thorne , C. , Higham , C. Payne , M. 2008 . Effect of Fuel and Lube Oil Sulfur on the Performance of a Diesel Exhaust Gas Continuously Regenerating Trap . Environ. Sci. Technol. , 42 : 9276 – 9282 .
   PubMed Web of Science ®Google Scholar
• Kittelson , D. and Franklin , L. 2010 . “ Nanoparticle Emissions from an Ethanol Fueled HCCI Engine ” . Cambridge , UK : Cambridge Particle Meeting, May 21, 2010 .
   Google Scholar
• Koch , W. , Lödding , H. , Mölter , W. and Munzinger , F. 1988 . Verdünnungssystem für die Messung hochkonzentrierter Aerosole mit optischen Partikelzählern Staub . Reinhalt. der Luft , 48 : 341 – 344 .
   Web of Science ®Google Scholar
• Konstandopoulos , A. and Papaioannou , E. 2008 . Update on The Science and Technology of Diesel Particulate Filters . KONA Powder and Part. J. , 26 : 36 – 65 .
   Web of Science ®Google Scholar
• Lähde , T. , Rönkkö , T. , Virtanen , A. , Schuck , T. J. , Pirjola , L. Hämeri , K. 2009 . Heavy Duty Diesel Engine Exhaust Aerosol Particle and Ion Measurements . Environ. Sci. Technol. , 43 : 163 – 168 .
   PubMed Web of Science ®Google Scholar
• Lee , C. , Oh , K. , Kim , D. and Lee , C. 2007 . A Characteristic of Particle Number Distribution for the Urea Solution Injection to Urea SCR System of Commercial Diesel Engine for an Emission Regulation . SAE Technical Paper 2007-01-3455
   Google Scholar
• Lovik , M. , Hogseth , A. K. , Gaarder , P. , Hagemann , R. and Eide , I. 1997 . Diesel Exhaust Particles and Carbon Black Have Adjuvant Activity on the Local Lymph Node Response and Systemic IgE Production to Ovalbumin . Toxicology , 121 : 165 – 178 .
   PubMed Web of Science ®Google Scholar
• MacDonald , J. , Barsic , N. , Gross , G. , Shaded , S. and Johnson , J. 1984 . Status of Diesel Particulate Measurement Methods . SAE Technical Paper 840345
   Google Scholar
• Maha . 2010 . Particle Counter SPC 8000 . Available at: http://www.maha-aip.de/english/spc8000.aspx
   Google Scholar
• Majewski , W. and Khair , M. 2006 . Diesel Emissions and Their Control , Warrendale, PA : SAE International .
   Google Scholar
• Mamakos , A. , Carriero , M. , Bonnel , P. , Demircioglu , H. , Douglas , K. Alessandrini , S. 2011d . EU-PEMS PM Evaluation Program—Second Report—Study on Post DPF PM/PN Emissions, EUR 24793 .
   Google Scholar
• Mamakos , A. , Dardiotis , C. , Marotta , A. , Martini , G. , Manfredi , U. Colombo , R. 2011b . Particle Emissions from a Euro 5a Certified Diesel Passenger Car, EUR 24855 EN .
   Google Scholar
• Mamakos , A. , Dardiotis , C. , Martini , G. and Krasenbrink , A. 2011c . Assessment of Particle Number Limits for Petrol Vehicles. EU Report . Available at: http://circa.europa.eu/Public/irc/enterprise/automotive/library?l=/mveg_vehicle_emissions/107th_january_2011&vm=detailed&sb=Title
   Google Scholar
• Mamakos , A. , Dardiotis , C. , Martini , G. , Perujo , A. , Marotta , A. and Manfredi , U. 2011a . “ Measurements of Sub 23 nm Particles Emitted from Late Technology Passenger Cars, using a PMP Compliant Volatile Particle Remover ” . 24 – 27 . Zurich , Switzerland : 16th ETH-Conference on Combustion Generated Nanoparticles . June
   Google Scholar
• Mamakos , A. , Ntziachristos , L. and Samaras , Z. 2004 . Comparability of Particle Emission Measurements Between Vehicle Testing Laboratories: A Long Way to Go . Meas. Sci. Technol. , 15 : 1855 – 1866 .
   Web of Science ®Google Scholar
• Maricq , M. 2007 . Chemical Characterization of Particulate Emissions from Diesel Engines: A Review . J. Aerosol Sci. , 38 : 1079 – 1118 .
   Web of Science ®Google Scholar
• Maricq , M. , Chase , R. , Podsiadlik , D. and Vogt , R. 1999c . Vehicle Exhaust Particle Size Distributions: A Comparison of Tailpipe and Dilution Tunnel Measurements . SAE Technical Paper 1999-01-1461
   Google Scholar
• Maricq , M. , Chase , R. , Xu , N. and Laing , P. 2002 . The Effects of the Catalytic Converter and Fuel Sulfur Level on Motor Vehicle Particulate Matter Emissions: Light Duty Diesel Vehicles . Environ. Sci. Technol. , 36 : 283 – 289 .
   PubMed Web of Science ®Google Scholar
• Maricq , M. , Podsiadlik , D. , Brehob , D. and Haghgooie , M. 1999a . Particulate Emissions from a Direct-Injection Spark Ingnition (DISI) Engine . SAE Technical Paper 1999-01-1530
   Google Scholar
• Maricq , M. , Podsiadlik , D. and Chase , R. 1999b . Gasoline Vehicle Particle Size Distributions: Comparison of Steady State, FTP, and US06 Measurements . Environ. Sci. Technol. , 33 : 2007 – 2015 .
   Web of Science ®Google Scholar
• Maricq , M. , Podsiadlik , D. and Chase , R. 1999d . Examination of the Size-Resolved and Transient Nature of Motor Vehicle Particle Emissions . Environ. Sci. Technol. , 33 : 1618 – 1626 .
   Web of Science ®Google Scholar
• Maricq , M. , Szente , J. , Loos , M. and Vogt , R. 2011 . Motor Vehicle PM Emissions Measurement at LEV III Levels . SAE Technical Paper 2011-01-0623
   Google Scholar
• Maricq , M. and Xu , N. 2004 . The Effective Density and Fractal Dimension of Soot Particles from Premixed Flames and Motor Vehicle Exhaust . J. Aerosol Sci. , 35 : 1251 – 1274 .
   Web of Science ®Google Scholar
• Marshall , I. and Sandbach , E. 2007 . Particle Number Counter Calibration/Validation procedures. Report to the Department for Transport. . Available at: http://www.unece.org/trans/doc/2008/wp29grpe/PMP-21-07e.pdf
   Google Scholar
• Martini , G. , Giechaskiel , B. and Dilara , P. 2009 . Future European Emission Standards for Vehicles: The Importance of the UN-ECE Particle Measurement Programme . Biomarkers , 14 ( S1 ) : 29 – 33 .
   PubMed Web of Science ®Google Scholar
• Mathis , U. , Mohr , M. and Forss , A. 2005 . Comprehensive Particle Characterization of Modern Gasoline and Diesel Passenger Cars at Low Ambient Temperatures . Atmos. Environ. , 39 : 107 – 117 .
   Web of Science ®Google Scholar
• Mathis , U. , Mohr , M. , Ristimäki , J. , Keskinen , J. , Ntziachristos , L. Samaras , Z. 2004 . Sampling Conditions for the Measurement of Nucleation Mode Particles in the Exhaust of a Diesel Vehicle . Aerosol Sci. Technol. , 38 : 1149 – 1160 .
   Web of Science ®Google Scholar
• May , J. 2011 . “ Particulate Emissions from Typical Light-Duty Vehicles Taken from the European Fleet Equipped with a Variety of Emissions Control Technologies ” . 26 – 29 . Zürich , Switzerland : 15th ETH Conference on Combustion Generated Nanoparticles . June
   Google Scholar
• May , J. , Bosteels , D. , Such , C. , Nicol , A. and Andersson , J. 2008 . Heavy Duty Engine Particulate Emissions: Application of PMP Methodology to Measure Particle Number and Particulate Mass . SAE Technical Paper 2008-01- 1176
   Google Scholar
• Mayer , A. , Czerwinski , J. , Matter , U. , Wyser , M. , Scheidegger , G. Kieser , D. 1998 . VERT: Diesel Nano-Particulate Emissions: Properties and Reduction Strategies . SAE Technical Paper 980539
   Google Scholar
• Mayer , A. , Matter , U. , Scheidegger , G. , Czerwinski , J. , Wyser , M. Kieser , D. 1999 . Particulate Traps for Retro-Fitting Construction Site Engines VERT: Final Measurement and Implementation . SAE Technical Paper 1999-01-0116
   Google Scholar
• Mayer , A. , Ulrich , A. , Czerwinski , J. and Mooney , J. 2010 . Metal–Oxide Particles in Combustion Engine Exhaust . SAE Technical Paper 2010-01-0792
   Google Scholar
• Mohr , M. 2008 . “ Future High-Confidence Measurement of Diesel Particulate Emissions for Approval and Development ” . Ludwigsburg, Germany : 5th International Exhaust Gas and Particulate Emissions Forum, February 19–20, 2008 .
   Google Scholar
• Mohr , M. , Forss , A. and Lehmann , U. 2006 . Particle Emissions from Diesel Passenger Cars Equipped with a Particle Trap in Comparison to Other Technologies . Environ. Sci. Technol. , 40 : 2375 – 2383 .
   PubMed Web of Science ®Google Scholar
• Mohr , M. , Forss , A. and Steffen , D. 2000 . Particulate Emissions of Gasoline Vehicles and Influence of the Sampling Procedure . SAE Technical Paper 2000-01-1137
   Google Scholar
• Mohr , M. , Lehmann , U. and Margaria , G. 2003a . ACEA Programme on the Emissions of Fine Particulates from Passenger Cars (2): Part 1: Particle Characterisation of a Wide Range of Engine Technologies . SAE Technical Paper 2003-01-1889
   Google Scholar
• Mohr , M. , Lehmann , U. and Margaria , G. 2003b . ACEA Programme on the Emissions of Fine Particulates from Passenger Cars (2): Part 2: Effect of Sampling Conditions and Fuel Sulphur Content on the Particle Emission . SAE Technical Paper 2003-01-1890
   Google Scholar
• Mohr , M. , Lehmann , U. and Rutter , J. 2005 . Comparison of Mass-Based and Non-Mass-Based Particle Measurement Systems for Ultra-Low Emissions from Automotive Sources . Environ. Sci. Technol. , 39 : 2229 – 2238 .
   PubMed Web of Science ®Google Scholar
• Myung , C. , Lee , H. , Kwon , S. , Lee , S. , Jun , J. Lee , Y. 2009 . Inter-Laboratory Correlation Exercise on a Light-Duty Diesel Passenger Vehicle to Verify Nano-particle Emission Characteristics by Korea Particle Measurement Programme . J. Mech. Sci. Technol. , 23 : 729 – 738 .
   Web of Science ®Google Scholar
• Ntziachristos , L. and Samaras , Z. 2010a . The Potential of a Partial-Flow Constant Dilution Ratio Sampling System as a Candidate for Vehicle Exhaust Aerosol Measurements . J. Air Waste Manag. Assoc. , 60 : 1223 – 1236 .
   PubMedGoogle Scholar
• Ntziachristos , L. and Samaras , Z. 2010b . “ Exhaust Emissions from Road Transport ” . In EMEP/EEA Air Pollutant Emission Inventory Guidebook—2009 , Copenhagen , , Denmark : European Environment Agency . Technical Report No 9/2009. Available online at: http://www.eea.europa.eu/publications/emep-eea-emission-inventory-guidebook-2009
   Google Scholar
• Ntziachristos , L. , Giechaskiel , B. , Pistikopoulos , P. and Samaras , Z. 2005 . Comparative Assessment of Two Different Sampling Systems for Particle Emission Type-Approval Measurements . SAE Technical Paper 2005-01-0198
   Google Scholar
• Ntziachristos , L. , Giechaskiel , B. , Pistikopoulos , P. , Samaras , Z. , Mathis , U. Mohr , M. 2004a . Performance Evaluation of a Novel Sampling and Measurement System for Exhaust Particle Characterization . SAE Technical Paper 2004-01-1439
   Google Scholar
• Oberdörster , G. 1996 . Significance of Particle Parameters in the Evaluation of Exposure–Dose Relationships of Inhaled Particles . Inhal. Toxicol. , 8 ( Suppl ) : 73 – 90 .
   PubMedGoogle Scholar
• Oberdörster , G. 2000 . Toxicology of Ultrafine Particles: In Vivo Studies . Philos. Trans. R. Soc. Ser. A , 258 : 2719 – 2740 .
   Web of Science ®Google Scholar
• Owen , M. , Mulholland , G. and Guthrie , W. 2010 . “ Condensation Particle Counter Proportionality Calibration from 1 particle·cm−3 to 104 particles·cm−3 ” . Portland, OR : Poster Presented at the AAAR 29th Anual Conference . October 25–29, 2010
   Google Scholar
• Park , K. , Kittelson , D. and McMurry , P. 2004 . “ Structural Properties of Diesel Exhaust Particles Measured by Transmission. Electron Microscopy (TEμ): Relationships to Particle Mass and Mobility ” . In Aerosol Sci. Techol. Vol. 38 , 881 – 889 .
   Google Scholar
• Particulates . 2003 . EU Particulates Programme Final Report: Characterization of Exhaust Particulate Emissions from Road Vehicles . Available at: http://lat.eng.auth.gr/particulates/downloads.htm
   Google Scholar
• Petzold , A. and Schönlinner , M . 2004 . Multi-Angle Absorption Photometry—A New Method for the Measurement of Aerosol Light Absorption and Atmospheric Black Carbon . J. Aerosol Sci. , 35 : 421 – 441 .
   Web of Science ®Google Scholar
• Piock , W. , Hoffmann , G. , Berndorfer , A. , Salemi , P. and Fusshoeller , B. 2011 . Strategies Towards Meeting Future Particulate Matter Emission Requirements in Homogeneous Gasoline Direct Injection Engines . SAE Technical Paper 2011-01-1212
   Google Scholar
• PMP . 2003 . Report of the GRPE Particle Measurement Programme (PMP): Government Sponsored Work Programmes . Available at: http://www.unece.org/trans/doc/2003/wp29grpe/TRANS-WP29-GRPE-specinf01e.pdf
   Google Scholar
• Pope , C. III . 2000 . Epidemiology of Fine Particulate Air Pollution and Human Health: Biologic Mechanisms and Who's at Risk? . Environ. Health Perspect. , 108 : 713 – 723 .
   PubMed Web of Science ®Google Scholar
• Price , P. , Stone , R. , Collier , T. , Davies , M. and Scheer , V. 2006 . Dynamic Particulate Measurements from a DISI Vehicle: A Comparison of DMS500, ELPI, CPC and PASS . SAE Technical Paper 2006-01-1077
   Google Scholar
• Rönkkö , T. , Virtanen , A. , Kannosto , J. , Keskinen , J. , Lappi , M. and Pirjola , L. 2007 . Nucleation Mode Particles with a Nonvolatile Core in the Exhaust of a Heavy Duty Diesel Vehicle . Environ. Sci. Technol. , 41 : 6384 – 6389 .
   PubMed Web of Science ®Google Scholar
• Rönkkö , T. , Virtanen , A. , Vaaraslahti , K. , Keskinen , J. , Pirjola , L. and Lappi , M. 2006 . Effect of Dilution Conditions and Driving Parameters on Nucleation Mode Particles in Diesel Exhaust: Laboratory and On-Road Study . Atmos Environ. , 40 : 2893 – 2901 .
   Web of Science ®Google Scholar
• Rothe , D. , Zuther , F. , Jacob , E. , Messerer , A. , Pöschl , U. Niessner , R. 2004 . New Strategies for Soot Emission Reduction of HD Vehicles . SAE Technical Paper 2004-01-3046
   Google Scholar
• Rusch , K. , Hofmann , L. , Zuerbig , J. and Scarnegie , B. 2003 . PM-Reduction by SCR-Catalyst . SAE Technical Paper 2003-01-0777
   Google Scholar
• Saito , C. , Nakatani , T. , Miyairi , Y. , Yuuki , K. , Makino , M. Kurachi , H. 2011 . New Particulate Filter Concept to Reduce Particle Number Emissions . SAE Technical Paper 2011-01-0814
   Google Scholar
• Sakurai , H. and Ehara , K. 2010 . “ A Method for Traceable Calibration of Condensation Particle Counters at Low Concentrations ” . Portland, OR : Poster Presented at the AAAR 29th Annual Conference . October 25–29 2010
   Google Scholar
• Sakurai , H. , Saito , K. , Taishi , T. and Koyama , T. 2011 . Two Sources of Error in Determination of the Particle Concentration Reduction Factor of the Volatile Particle Remover Used in Legislated Vehicle Emission Measurement . Meas. Sci. Technol. , 22 : 085108
   Web of Science ®Google Scholar
• Sandbach , E. and Marshall , I. 2007 . Volatile Particle Remover Calibration Procedures. AEA Report to the Department for Transport . Available at: http://www.unece.org/fileadmin/DAM/trans/doc/2008/wp29grpe/PMP-VPR-CalibrationProcedure.pdf
   Google Scholar
• Schauer , J. 2003 . Evaluation of Elemental Carbon as a Marker for Diesel Particulate Matter . J. Expo. Anal. Environ. Epidemiol. , 13 : 443 – 453 .
   PubMedGoogle Scholar
• Schauer , J. , Christensen , C. , Kittelson , D. , Johnson , J. and Watts , W. 2008 . Impact of Ambient Temperatures and Driving Conditions on the Chemical Composition of Particulate Matter Emissions from Non-Smoking Gasoline-Powered Motor Vehicles . Aerosol Sci. Technol. , 42 : 210 – 223 .
   Web of Science ®Google Scholar
• Schauer , J. , Kleeman , M. , Cass , G. and Simoneit , B. 1999 . Measurement of Emissions from Air Pollution Sources. 2. C1 through C30 Organic Compounds from Medium Duty Diesel Trucks . Environ. Sci. Technol. , 33 : 1578 – 1587 .
   Web of Science ®Google Scholar
• Schindler , W. , Haisch , C. , Beck , H. A. , Niessner , R. , Jacob , E. and Rothe , D. 2004 . A Photoacoustic Sensor System for Time Resolved Quantification of Diesel Soot Emissions . SAE Technical Paper 2004-01-0968
   Google Scholar
• Schraml , S. , Heimgärtner , C. , Will , S. and Leipertz , A. 2000 . Application of a New Soot Sensor for Exhaust Emission Control Based on Time Resolved Laser Induced Incandescence (TIRE-LII) . SAE Technical Paper 2000-01-2864
   Google Scholar
• Seaton , A. , Tran , L. , Aitken , R. and Donaldson , K. 2010 . Safety of Nanomaterials Interdisciplinary Research Centre Nanoparticles, Human Health Hazard and Regulation . J. R. Soc. Interface , 7 : S119 – S129 .
   PubMed Web of Science ®Google Scholar
• Sogawa , Y. , Hattori , H. , Yanagisawa , N. , Hosoya , M. , Shoji , T. Iwakiri , Y. 2007 . Nano Particle Emission Evaluation of State of the Art Diesel Aftertreatment Technologies (DPF, Urea-SCR and DOC), Gasoline Combustion Systems (Lean Burn/Stoichiometric DISI and MPI) and Fuel Qualities Effects (EtOH, ETBE, FAME, Aromatics and Distillation) . SAE Technical Paper 2007-01-4083
   Google Scholar
• Sokken . 2010 . Exhaust Emissions Particle Number Measurement System . PMS-M2. Available at: http://www.sokken.co.jp/en/particle/201011/entry76.html
   Google Scholar
• Stein , J. 2001 . World Harmonized Heavy Duty Emissions Certification Procedure. Exhaust Emissions Measurement ISO 2nd Interim Report, Report to the ECE-GRPE WHDC Subgroup “ISO Activities”, 2001 .
   Google Scholar
• Steininger . 2011 . “ Particle Number Emission Limits for Euro 6 Positive Ignition Vehicles ” . Zürich, Switzerland : 15th ETH Conference on Combustion Generated Nanoparticles, June 26–29 .
   Google Scholar
• Stone , V. , Wilson , M. , Lightbody , J. and Donaldson , K. 2003 . Investigating the Potential for Interaction between the Components of PM10 . Environ. Health Perspect. Med. , 7 : 246 – 253 .
   PubMedGoogle Scholar
• Stratmann , F. , Otto , E. and Fissan , H. 1994 . Thermophoretic and Diffusional Particle Transport in Cooled Laminar Tube Flow . J. Aerosol Sci. , 25 : 1305 – 1319 .
   Web of Science ®Google Scholar
• Swanson , J. and Kittelson , D. 2010 . Evaluation of Thermal Denuder and Catalytic Stripper Methods for Solid Particle Measurements . J. Aerosol Sci. , 41 : 1113 – 1122 .
   Web of Science ®Google Scholar
• Swanson , J. , Kittelson , D. , Watts , W. , Gladis , D. and Twigg , M. 2009 . Influence of Storage and Release on Particle Emissions from New and Used CRTs . Atmos. Environ. , 43 : 3998 – 4004 .
   Web of Science ®Google Scholar
• Takegawa , N. and Sakurai , H. 2011 . Laboratory Evaluation of a TSI Condensation Particle Counter (Model 3771) Under Airborne Measurement Conditions . Aerosol Sci. Technol. , 45 : 272 – 283 .
   Web of Science ®Google Scholar
• Tandon , P. , Heibel , A. , Whitmore , J. , Kerke , N. and Chithapragada , K. 2010 . Measurement and Prediction of Filtration Efficiency Evolution of Soot Loaded Diesel Particulate Filters . Chem. Eng. Sci. , 65 : 4751 – 4760 .
   Web of Science ®Google Scholar
• Thompson , N. , Ntziachristos , L. , Samaras , Z. , Aakko , P. , Wass , U. Hausberger , S. 2004 . Overview of the European “Particulates” Project on the Characterization of Exhaust Particulate Emissions from Road Vehicles: Results for Heavy-Duty Engines . SAE Technical Paper 2004-01-1986
   Google Scholar
• TSI . 2007 . Engine Exhaust CPC 3790 . Available at: http://www.tsi.com/en-1033/models/2272/3790.aspx
   Google Scholar
• Tzamkiozis , T. , Ntziachristos , L. and Samaras , Z. 2010 . Diesel Passenger Car PM Emissions: From Euro 1 to Euro 4 with Particle Filter . Atmos. Environ. , 44 : 909 – 916 .
   Web of Science ®Google Scholar
• UNECE Regulation No . 49 (Proposal for Supplement 4 to the 05 Series of Amendments to Regulation No. 49 (Emissions of Compression Ignition and Gas Fuelled Positive Ignition Engines for Use in Vehicles) . Available at: http://www.unece.org/trans/doc/2010/wp29grpe/ECE-TRANS-WP29-GRPE-2010-07e.pdf
   Google Scholar
• UNECE Regulations No . 83 (Uniform Provisions Concerning the Approval of Vehicles with Regard to the Emission of Pollutants According to Engine Fuel Requirements) . Available at: http://www.unece.org/trans/main/wp29/wp29regs81-100.html
   Google Scholar
• Vaaraslahti , K. , Ristimäki , J. , Virtanen , A. , Keskinen , J. , Giechaskiel , B. and Solla , A. 2006 . Effect of Oxidation Catalysts on Diesel Soot Particles . Environ. Sci. Technol. , 40 : 4776 – 4781 .
   PubMed Web of Science ®Google Scholar
• Vaaraslahti , K. , Virtanen , A. , Ristimäki , J. and Keskinen , J. 2004a . Nucleation Mode Formation in Heavy-Duty Diesel Exhaust with and without a Particulate Filter . Environ. Sci. Technol. , 38 : 4884 – 4890 .
   PubMed Web of Science ®Google Scholar
• Vaaraslahti , K. , Virtanen , A. , Ristimäki , J. and Keskinen , J. 2004b . Effect of After-Treatment Systems on Size Distribution of Heavy Duty Diesel Exhaust Aerosol . SAE Technical Paper 2004-01-1980
   Google Scholar
• Vakkilainen , A. and Lylykangas , R. 2004 . Particle Oxidation Catalyst (POC) for Diesel Vehicles . SAE Technical Paper 2004-28-0047
   Google Scholar
• VAMV . 2006 . Verordnung des EJPD über Abgasmessgeräte für Verbrennungsmotoren (VAMV) vom 19 . März 2006 (Stand am 2. Mai 2006)
   Google Scholar
• VIM . 2008 . International Vocabulary of Basic and General Terms in Metrology; VIM, 3rd ed. . Joint Commitee for Guides in Metorology , 200
   Google Scholar
• Virtanen , A. , Ristimäki , J. , Vaaraslahti , K. and Keskinen , J. 2004 . Effect of Engine Load on Diesel Soot Particles . Environ. Sci. Technol. , 38 : 2551 – 2556 .
   PubMed Web of Science ®Google Scholar
• Vogt , R. , Kirchner , U. and Maricq , M. 2006 . “ Technical Challenges with Low Level PM Mass and Number Measurements ” . Cambridge Particle Meeting . May 22, 2006, Cambridge, UK
   Google Scholar
• Vogt , R. , Kirchner , U. and Maricq , M. 2010 . “ Investigation of EURO-5/6 Level Particle Number Emissions of European Diesel Light Duty Vehicles ” . Zürich , , Switzerland : 14th ETH Conference . August 1–4, 2010
   Google Scholar
• Vouitsis , E. , Ntziachristos , L. and Samaras , Z. 2003 . Particulate Matter Mass Measurements for Low Emitting Diesel Powered Vehicles: What's Next? . Prog. Energy Combust. Sci. , 29 : 635 – 672 .
   Web of Science ®Google Scholar
• Vouitsis , E. , Ntziachristos , L. and Samaras , Z. 2004 . Modeling of Diesel Exhaust Aerosol During Laboratory Sampling . Atmos. Environ. , 39 : 1335 – 1345 .
   Web of Science ®Google Scholar
• Wang , S. and Flagan , R. 1990 . Scanning Electrical Mobility Spectrometer . Aerosol Sci. Technol. , 13 : 230 – 240 .
   Web of Science ®Google Scholar
• Wang , X. , Caldow , R. , Sem , G. , Hama , N. and Sakurai , H. 2010 . Evaluation of a Condensation Particle Counter for Vehicle Emission Measurement: Experimental Procedure and Effects of Calibration Aerosol Material . J. Aerosol Sci. , 41 : 306 – 318 .
   Web of Science ®Google Scholar
• Wedekind , B. , Andersson , J. , Hall , D. , Stradling , R. , Barnes , C. and Wilson , G. 2000 . DETR/SMMT/CONCAWE Particle Research Programme: Heavy Duty Results . SAE Technical Paper 2000-01-2851
   Google Scholar
• Wei , Q. , Oestergaard , K. , Porter , S. , Ichiro , A. , Adachi , M. and Montajir , M. 2006 . Real-Time Measuring System for Engine Exhaust Solid Particle Number Emission—Design and Performance . SAE Technical Paper 2006-01-0864
   Google Scholar
• Wentzel , M. , Gorzawski , H. , Naumann , K.-H. , Saathoff , H. and Weinbruch , S. 2003 . Transmission Electron Microscopical and Aerosol Dynamical Characterization of Soot Aerosols . J. Aerosol Sci. , 34 : 1347 – 1370 .
   Web of Science ®Google Scholar
• Whitaker , P. , Karpus , P. , Ogris , M. and Hollerer , P. 2011 . Measures to Reduce Particulate Emissions from Gasoline DI Engines . SAE Technical Paper 2011-01-1219
   Google Scholar
• Yang , H. , Barger , M. , Castranova , V. , Ma , J. , Yang , J. and Ma , J. 1999 . Effects of Diesel Exhaust Particles (DEP), Carbon Black, and Silica on Macrophage Responses to Lipopolysaccharide: Evidence of DEP Suppression of Macrophage Activity . J. Toxicology and Environmental Health A , 58 : 261 – 278 .
   PubMed Web of Science ®Google Scholar
• Yang , J. , Stewart , M. , Maupin , G. , Herling , D. and Zelenyuk , A. 2009 . Single Wall Diesel Particulate Filter (DPF) Filtration Efficiency Studies Using Laboratory Generated Particles . Chem. Eng. Sci. , 64 : 1625 – 1634 .
   Web of Science ®Google Scholar
• Zervas , E. , Dorlhene , P. , Forti , L. , Perrin , C. , Momique , J. Monier , R. 2005 . Inter-Laboratory Test of Exhaust PM Using ELPI . Aerosol Sci. Technol. , 39 : 333 – 346 .
   Web of Science ®Google Scholar
• Zervas , E. , Dorlhene , P. , Forti , L. , Perrin , C. , Momique , J. C. Monier , R. 2006 . Inter-Laboratory Study of the Exhaust Gas Particle Number Measurements Using the Condensation Particle Counter (CPC) . Energy & Fuels , 20 : 2426 – 2431 .
   Web of Science ®Google Scholar
• Zhang , S. , McMahon , W , Frodin , B , Toutoundjian , H. and Cruz , M. 2010 . “ Particulate Emissions from California Lev II Certified Gasoline Direct Injection Vehicles ” . San Diego, CA : 20th CRC On-Road Vehicle Emissions Workshop, March 22–23, 2010 .
   Google Scholar
• Zhao , F. , Lai , M. and Harrington , D. 1999 . Automotive Spark-Ignited Direct-Injection Gasoline Engines . Prog. Energy Combust. Sci. , 25 : 437 – 562 .
   Web of Science ®Google Scholar