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Articles

Fluorescence quantum yield of CDOM in coastal zones of the Arctic seas

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Pages 9356-9379 | Received 05 Feb 2018, Accepted 18 Jul 2018, Published online: 22 Aug 2018

References

  • Amon, R. M. W. 2004. “The Role of Dissolved Organic Matter for the Organic Carbon Cycle in the Arctic Ocean.” In The Organic Carbon Cycle in the Arctic Ocean, edited by R. Stein and R. W. Macdonald, 83–99. Berlin: Springer-Verlag Berlin Heidelberg.
  • Andrew, A. A., R. Del Vecchio, A. Subramaniam, and N. V. Blough. 2013. “Chromophoric Dissolved Organic Matter (CDOM) in the Equatorial Atlantic Ocean: Optical Properties and Their Relation to CDOM Structure and Source.” Marine Chemistry 148: 33–43. doi:10.1016/j.marchem.2012.11.001.
  • Belin, C., C. Quellec, M. Lamotte, M. Ewald, and P. Simon. 1993. “Characterization by Fluorescence of the Dissolved Organic-Matter in Natural-Water - Application to Fractions Obtained by Tangential Ultrafiltration and Xad Resin Isolation.” Environmental Technology 14 (12): 1131–1144. doi:10.1080/09593339309385391.
  • Cawley, K. M., J. A. Korak, and F. L. Rosario-Ortiz. 2015. “Quantum Yields for the Formation of Reactive Intermediates from Dissolved Organic Matter Samples from the Suwannee River.” Environmental Engineering Science 32 (1): 31–37. doi:10.1089/ees.2014.0280.
  • Chekalyuk, A., and M. Hafez. 2013. “Next Generation Advanced Laser Fluorometry (ALF) for Characterization of Natural Aquatic Environments: New Instruments.” Optics Express 21 (12): 14181–14201.
  • Coble, P. G. 2007. “Marine Optical Biogeochemistry: The Chemistry of Ocean Color.” Chemical Reviews 107 (2): 402–418. doi:10.1021/cr050350+.
  • Coble, P. G., R. G. M. Spencer, A. Baker, and D. M. Reynolds. 2014. “Aquatic Organic Matter Fluorescence.” Aquatic Organic Matter Fluorescence 75–122. doi:10.1017/Cbo9781139045452.
  • David, M. A., L. G. Anderson, T. R. Christensen, S. Dallimore, D. J. Laodong Guo, M. H. Hayes, T. D. Lorenson, R. W. Macdonald, and N. Roulet. 2009. “Sensitivity of the Carbon Cycle in the Arctic to Climate Change.” Ecological Monographs 79 (4): 523–555. doi:10.1890/08-2025.1.
  • Del Vecchio, R., and N. V. Blough. 2004. “On the Origin of the Optical Properties of Humic Substances.” Environmental Science & Technology 38 (14): 3885–3891. doi:10.1021/es049912h.
  • Drozdova, A. N., I. N. Krylov, and S. A. Shchuka. 2018. “CDOM Fluorescence of the Laptev Sea and East Siberean Sea Surface Waters.” EARSeL eProceedings 17 (1): 1–6. doi:10.12760/01-2018-1-01.
  • Drozdova, A. N., S. V. Patsaeva, and D. A. Khundzhua. 2017. “Fluorescence of Dissolved Organic Matter as a Marker for Distribution of Desalinated Waters in the Kara Sea and Bays of Novaya Zemlya Archipelago.” Oceanology 57 (1): 41–47. doi:10.1134/S0001437017010039.
  • Fantoni, R., R. Barbini, F. Colao, D. Ferrante, L. Fiorani, and A. Palucci. 2004. “INTEGRATION of TWO LIDAR FLUOROSENSOR PAYLOADS in SUBMARINE ROV and FLYING UAV PLATFORMS.” EARSeL eProceedings 3 (1): 43.
  • Fellman, J. B., E. Hood, and R. G. M. Spencer. 2010. “Fluorescence Spectroscopy Opens New Windows into Dissolved Organic Matter Dynamics in Freshwater Ecosystems: A Review.” Limnology and Oceanography 55 (6): 2452–2462. doi:10.4319/lo.2010.55.6.2452.
  • Ferrari, G. M. 2000. “The Relationship between Chromophoric Dissolved Organic Matter and Dissolved Organic Carbon in the European Atlantic Coastal Area and in the West Mediterranean Sea (Gulf of Lions).” Marine Chemistry 70 (4): 339–357. doi:10.1016/S0304-4203(00)00036-0.
  • Gonçalves-Araujo, R., B. Rabe, I. Peeken, and A. Bracher. 2018. “High Colored Dissolved Organic Matter (CDOM) Absorption in Surface Waters of the Central-Eastern Arctic Ocean: Implications for Biogeochemistry and Ocean Color Algorithms.” PloS One 13 (1): e0190838. doi:10.1371/journal.pone.0190838.
  • Gonçalves-Araujo, R., C. A. Stedmon, B. Heim, I. Dubinenkov, A. Kraberg, D. Moiseev, and A. Bracher. 2015. “From Fresh to Marine Waters: Characterization and Fate of Dissolved Organic Matter in the Lena River Delta Region, Siberia.” Frontiers in Marine Science 2. doi:10.3389/fmars.2015.00108.
  • Gorshkova, O. M., A. S. Milukov, S. V. Patsayeva, and V. I. Yuzhakov. 2005. “Fluorescence of DOM Nanoparticles in Natural Water - Art. No. 62630Y.” Atomic and Molecular Pulsed Lasers VI 6263: Y2630–Y. doi:10.1117/12.677453.
  • Gosteva, O. Y., A. A. Izosimov, S. V. Patsaeva, V. I. Yuzhakov, and O. S. Yakimenko. 2012. “Fluorescence of Aqueous Solutions of Commercial Humic Products.” Journal of Applied Spectroscopy 78 (6): 884–891. doi:10.1007/s10812-012-9548-8.
  • Granskog, M. A., A. K. Pavlov, S. Sagan, P. Kowalczuk, A. Raczkowska, and C. A. Stedmon. 2015. “Effect of Sea-Ice Melt on Inherent Optical Properties and Vertical Distribution of Solar Radiant Heating in Arctic Surface Waters.” Journal of Geophysical Research: Oceans 120 (10): 7028–7039. doi:10.1002/2015JC011087.
  • Green, S. A., and N. V. Blough. 1994. “Optical-Absorption and Fluorescence Properties of Chromophoric Dissolved Organic-Matter in Natural-Waters.” Limnology and Oceanography 39 (8): 1903–1916. doi:10.4319/lo.1994.39.8.1903.
  • Grunwald, M., O. Dellwig, G. Liebezeit, B. Schnetger, R. Reuter, and H. J. Brumsack. 2007. “A Novel Time-Series Station in the Wadden Sea (NW Germany): First Results on Continuous Nutrient and Methane Measurements.” Marine Chemistry 107 (3): 411–421. doi:10.1016/j.marchem.2007.04.003.
  • Harsdorf, S., M. Janssen, R. Reuter, S. Toeneboen, B. Wachowicz, and R. Willkomm. 1999. “Submarine Lidar for Seafloor Inspection.” Measurement Science and Technology 10 (12): 1178–1184. doi:10.1088/0957-0233/10/12/309.
  • Hawes, S. K., K. L. Carder, and G. R. Harvey. 1992. “Quantum Fluorescence Efficiencies of Fulvic and Humic Acids: Effects on Ocean Color and Fluorometric Detection.” In Proc. SPIE, Ocean Optics XI, Vol. 1750, edited by G. D. Gilbert, 212–224. Bellingham: International Society for Optics and Photonics. doi:10.1117/12.140652.
  • Helms, J. R., A. Stubbins, J. D. Ritchie, E. C. Minor, D. J. Kieber, and K. Mopper. 2008. “Absorption Spectral Slopes and Slope Ratios as Indicators of Molecular Weight, Source, and Photobleaching of Chromophoric Dissolved Organic Matter.” Limnology and Oceanography 53 (3): 955–969. doi:10.4319/lo.2008.53.3.0955.
  • Hockaday, W. C., J. M. Purcell, A. G. Marshall, J. A. Baldock, and P. G. Hatcher. 2009. “Electrospray and Photoionization Mass Spectrometry for the Characterization of Organic Matter in Natural Waters: A Qualitative Assessment.” Limnology and Oceanography: Methods 7 (1): 81–95. doi:10.4319/lom.2009.7.81.
  • Huguet, A., L. Vacher, S. Relexans, S. Saubusse, J. M. Froidefond, and E. Parlanti. 2009. “Properties of Fluorescent Dissolved Organic Matter in the Gironde Estuary.” Organic Geochemistry 40 (6): 706–719. doi:10.1016/j.orggeochem.2009.03.002.
  • Khundzhua, D. A., S. V. Patsaeva, O. A. Trubetskoj, and O. E. Trubetskaya. 2017. “An Analysis of Dissolved Organic Matter from Freshwater Karelian Lakes Using Reversed-Phase High-Performance Liquid Chromatography with Online Absorbance and Fluorescence Analysis.” Moscow University Physics Bulletin 72 (1): 68–75. doi:10.3103/S002713491701009x.
  • Kochenkova, A. I., A. N. Novigatskiy, and V. V. Gordeev. 2018. “Distribution of Suspended Matter in the Marginal Filter of the Northern Dvina at the End of Summer.” Modern Problems of Science and Education 2: 106–112. (in Russian). doi:10.17513/use.36680.
  • Kostianoy, A. G., and J. C. J. Nihoul. 2009. “Frontal Zones in the Norwegian, Greenland, Barents and Bering Seas.” In Influence of Climate Change on the Changing Arctic and Sub-Arctic Conditions, edited by J. C. J. Nihoul and A.G. Kostianoy, 171–190. Dordrecht: Springer.
  • Kutser, T., B. Paavel, L. Metsamaa, and E. Vahtmae. 2009. “Mapping Coloured Dissolved Organic Matter Concentration in Coastal Waters.” International Journal of Remote Sensing 30 (22): 5843–5849. doi:10.1080/01431160902744837.
  • Lakowicz, J. R. 2006. Principles of Fluorescence Spectroscopy. Berlin: Springer.
  • Leenheer, J. A., and J. P. Croue. 2003. “Characterizing Aquatic Dissolved Organic Matter.” Environmental Science & Technology 37 (1): 18a–26a. doi:10.1021/es032333c.
  • Lobbes, J. M., H. P. Fitznar, and G. Kattner. 2000. “Biogeochemical Characteristics of Dissolved and Particulate Organic Matter in Russian Rivers Entering the Arctic Ocean.” Geochimica Et Cosmochimica Acta 64 (17): 2973–2983. doi:10.1016/S0016-7037(00)00409-9.
  • Lubben, A., O. Dellwig, S. Koch, M. Beck, T. Badewien, S. Fischer, and R. Reuter. 2009. “Distributions and Characteristics of Dissolved Organic Matter in Temperate Coastal Waters (Southern North Sea).” Ocean Dynamics 59 (2): 263–275. doi:10.1007/s10236-009-0181-x.
  • Makkaveev, P. N., A. A. Polukhin, A. V. Kostyleva, E. A. Protsenko, S. V. Stepanova, and S. K. Yakubov. 2017. “Hydrochemical Features of the Kara Sea Aquatic Area in Summer 2015.” Oceanology 57 (1): 48–57. doi:10.1134/S0001437017010088.
  • Mann, P. J., G. M. Robert, P. J. Spencer, J. S. Hernes, G. R. Aiken, S. E. Tank, J. W. McClelland, K. D. Butler, R. Y. Dyda, and R. M. Holmes. 2016. “Pan-Arctic Trends in Terrestrial Dissolved Organic Matter from Optical Measurements.” Frontiers in Earth Science 4: 25. doi:10.3389/feart.2016.00025.
  • Mannino, A., M. G. Novak, S. B. Hooker, K. Hyde, and D. Aurin. 2014. “Algorithm Development and Validation of CDOM Properties for Estuarine and Continental Shelf Waters along the Northeastern U.S. Coast.” Remote Sensing of Environment 152: 576–602. doi:10.1016/j.rse.2014.06.027.
  • Marshall, A. G., C. L. Hendrickson, and G. S. Jackson. 1998. “Fourier Transform Ion Cyclotron Resonance Mass Spectrometry: A Primer.” Mass Spectrometry Reviews 17 (1): 1–35. doi:10.1002/(sici)1098-2787(1998)17:1<1::Aid-mas1>3.0.Co;2-k.
  • Meier, W. N., G. K. Hovelsrud, E. H. Bob, J. R. Van Oort, K. M. Key, C. M. Kovacs, C. Haas, et al. 2014. “Arctic Sea Ice in Transformation: A Review of Recent Observed Changes and Impacts on Biology and Human Activity.” Reviews of Geophysics 52 (3): 185–217. doi:10.1002/2013rg000431.
  • Milyukov, A. S., S. V. Patsaeva, V. I. Yuzhakov, O. M. Gorshkova, and E. M. Prashchikina. 2007. “Fluorescence of Nanoparticles of Organic Matter Dissolved in Natural Water.” Moscow University Physics Bulletin 62 (6): 368–372. doi:10.3103/s0027134907060082.
  • Orek, H., R. Doerffer, R. Rottgers, M. Boersma, and K. H. Wiltshire. 2013. “Contribution to a Bio-Optical Model for Remote Sensing of Lena River Water.” Biogeosciences 10 (11): 7081–7094. doi:10.5194/bg-10-7081-2013.
  • Palmer, S. C. J., V. V. Pelevin, I. Goncharenko, A. W. Kovacs, A. Zlinszky, M. Presing, H. Horvath, V. Nicolas-Perea, H. Balzter, and V. R. Toth. 2013. “Ultraviolet Fluorescence LiDAR (UFL) as a Measurement Tool for Water Quality Parameters in Turbid Lake Conditions.” Remote Sensing 5 (9): 4405–4422. doi:10.3390/rs5094405.
  • Parlanti, E., B. Morin, and L. Vacher. 2002. “Combined 3d-Spectrofluorometry, High Performance Liquid Chromatography and Capillary Electrophoresis for the Characterization of Dissolved Organic Matter in Natural Waters.” Organic Geochemistry 33 (3): 221–236. doi:10.1016/S0146-6380(01)00154-1.
  • Patsaeva, S., D. Khundzhua, O. A. Trubetskoj, and O. E. Trubetskaya. 2018. “Excitation-Dependent Fluorescence Quantum Yield for Freshwater Chromophoric Dissolved Organic Matter from Northern Russian Lakes.” Journal of Spectroscopy 2018 (3168320): 1–7. doi:10.1155/2018/3168320.
  • Patsayeva, S., and R. Reuter. 1995. “Spectroscopic Study of Major Components of Dissolved Organic Matter Naturally Occurring in Water.” Global Process Monitoring and Remote Sensing of the Ocean and Sea Ice 2586: 151–160. doi:10.1117/12.228618.
  • Pavlov, A. K., M. A. Granskog, C. A. Stedmon, B. V. Ivanov, S. R. Hudson, and S. Falk-Petersen. 2015. “Contrasting Optical Properties of Surface Waters across the Fram Strait and Its Potential Biological Implications.” Journal of Marine Systems 143: 62–72. doi:10.1016/j.jmarsys.2014.11.001.
  • Pavlov, A. K., C. A. Stedmon, A. V. Semushin, T. Martma, B. V. Ivanov, P. Kowalczuk, and M. A. Granskog. 2016. “Linkages between the Circulation and Distribution of Dissolved Organic Matter in the White Sea, Arctic Ocean.” Continental Shelf Research 119: 1–13. doi:10.1016/j.csr.2016.03.004.
  • Pelevin, V., A. Zlinszky, E. Khimchenko, and V. Toth. 2017. “Ground Truth Data on Chlorophyll-A, Chromophoric Dissolved Organic Matter and Suspended Sediment Concentrations in the Upper Water Layer as Obtained by LIF Lidar at High Spatial Resolution.” International Journal of Remote Sensing 38 (7): 1967–1982. doi:10.1080/01431161.2016.1274446.
  • Pugach, S. P., I. I. Pipko, I. P. Semiletov, and V. I. Sergienko. 2015. “Optical Characteristics of the Colored Dissolved Organic Matter on the East Siberian Shelf.” Doklady Earth Sciences 465 (2): 1293–1296. doi:10.1134/S1028334x15120120.
  • Pugach, S. P., I. I. Pipko, N. E. Shakhova, E. A. Shirshin, I. V. Perminova, Ö. Gustafsson, V. G. Bondur, A. S. Ruban, and I. P. Semiletov. 2018. “Dissolved Organic Matter and Its Optical Characteristics in the Laptev and East Siberian Seas: Spatial Distribution and Interannual Variability (2003–2011).” Ocean Science 14 (1): 87–103. doi:10.5194/os-14-87-2018.
  • Raymond, P. A., J. W. McClelland, R. M. Holmes, A. V. Zhulidov, K. Mull, B. J. Peterson, R. G. Striegl, G. R. Aiken, and T. Y. Gurtovaya. 2007. “Flux and Age of Dissolved Organic Carbon Exported to the Arctic Ocean: A Carbon Isotopic Study of the Five Largest Arctic Rivers.” Global Biogeochemical Cycles 21: 4. doi:10.1029/2007gb002934.
  • Shubina, D., E. Fedoseeva, O. Gorshkova, S. Patsaeva, V. Terekhova, M. Timofeev, and V. Yuzhakov. 2010. “The” Blue Shift” of Emision Maximum and the Fluorescence Quantum Yield as Quantitative Spectral Characteristics of Dissolved Humic Substances.” EARSeL eProceedings 9 (1): 13–21.
  • Stedmon, C. A., R. M. W. Amon, A. J. Rinehart, and S. A. Walker. 2011. “The Supply and Characteristics of Colored Dissolved Organic Matter (CDOM) in the Arctic Ocean: Pan Arctic Trends and Differences.” Marine Chemistry 124 (1–4): 108–118. doi:10.1016/j.marchem.2010.12.007.
  • Stedmon, C. A., S. Markager, and R. Bro. 2003. “Tracing Dissolved Organic Matter in Aquatic Environments Using a New Approach to Fluorescence Spectroscopy.” Marine Chemistry 82 (3–4): 239–254. doi:10.1016/S0304-4203(03)00072-0.
  • Stedmon, C. A., S. Markager, and H. Kaas. 2000. “Optical Properties and Signatures of Chromophoric Dissolved Organic Matter (CDOM) in Danish Coastal Waters.” Estuarine Coastal and Shelf Science 51 (2): 267–278. doi:10.1006/ecss.2000.0645.
  • Stedmon, C. A., and N. B. Nelson. 2015. “The Optical Properties of DOM in the Ocean.” In Biogeochemistry of Marine Dissolved Organic Matter, edited by D. A. Hansell and C. A. Carlson, 2nd ed. 481–508. Oxford: Academic Press.
  • Stepanova, S. V., A. A. Polukhin, and A. V. Kostyleva. 2017. “Hydrochemical Structure of the Waters in the Eastern Part of the Laptev Sea in Autumn 2015.” Oceanology 57 (1): 58–64. doi:10.1134/S0001437017010180.
  • Sukhanova, I. N., M. V. Flint, E. J. Georgieva, E. K. Lange, M. D. Kravchishina, A. B. Demidov, A. A. Nedospasov, and A. A. Polukhin. 2017. “The Structure of Phytoplankton Communities in the Eastern Part of the Laptev Sea.” Oceanology 57 (1): 75–90. doi:10.1134/S0001437017010209.
  • Thurman, E. M. 2012. Organic Geochemistry of Natural Waters. Vol. 2. Berlin: Springer Science & Business Media.
  • Trubetskaya, O. E., C. Richard, and O. A. Trubetskoj. 2015. “Evaluation of Suwannee River NOM Electrophoretic Fractions by RP-HPLC with Online Absorbance and Fluorescence Detection.” Environmental Science and Pollution Research 22 (13): 9989–9998. doi:10.1007/s11356-015-4188-1.
  • Trubetskaya, O. E., C. Richard, and O. A. Trubetskoj. 2016. “High Amounts of Free Aromatic Amino Acids in the Protein-Like Fluorescence of Water-Dissolved Organic Matter.” Environmental Chemistry Letters 14 (4): 495–500. doi:10.1007/s10311-016-0556-4.
  • Trubetskoi, O. A., and O. E. Trubetskaya. 2004. “Comparative Electrophoretic Analysis of Humic Substances in Soils and River and Lake Waters.” Eurasian Soil Science 37 (11): 1170–1172.
  • Trubetskoj, O. A., O. E. Trubetskaya, and C. Richard. 2009. “Photochemical Activity and Fluorescence of Electrophoretic Fractions of Aquatic Humic Matter.” Water Resources 36 (5): 518–524. doi:10.1134/S0097807809050042.
  • Velapoldi, R. A., and K. D. Mielenz. 1981. “A Fluorescence Standard Reference Material - Quinine Sulfate Dihydrate.” Applied Optics 20 (9): 1718. doi:10.1364/Ao.20.001718.
  • Vetrov, A. A., and E. A. Romankevich. 2004. Carbon Cycle in the Russian Arctic Seas. Berlinn: Springer-Verlag Berlin Heidelberg.
  • Walker, S. A., R. M. W. Amon, and C. A. Stedmon. 2013. “Variations in High-Latitude Riverine Fluorescent Dissolved Organic Matter: A Comparison of Large Arctic Rivers.” Journal of Geophysical Research-Biogeosciences 118 (4): 1689–1702. doi:10.1002/2013jg002320.
  • Weber, J., Y. Chen, E. Jamroz, and T. Miano. 2018. “Preface: Humic Substances in the Environment.” Journal of Soils and Sediments. doi:10.1007/s11368-018-2052-x.
  • Weishaar, J. L., G. R. Aiken, B. A. Bergamaschi, M. S. Fram, R. Fujii, and K. Mopper. 2003. “Evaluation of Specific Ultraviolet Absorbance as an Indicator of the Chemical Composition and Reactivity of Dissolved Organic Carbon.” Environmental Science & Technology 37: 4702–4708. doi:10.1021/es030360x.
  • Wünsch, U. J., B. P. Koch, M. Witt, and J. A. Needoba. 2016. “Seasonal Variability of Dissolved Organic Matter in the Columbia River: In Situ Sensors Elucidate Biogeochemical and Molecular Analyses.” Biogeosciences Discuss 1–33. doi:10.5194/bg-2016-263.
  • Wunsch, U. J., K. R. Murphy, and C. A. Stedmon. 2017. “The One-Sample PARAFAC Approach Reveals Molecular Size Distributions of Fluorescent Components in Dissolved Organic Matter.” Environmental Science & Technology 51 (20): 11900–11908. doi:10.1021/acs.est.7b03260.
  • Wünsch, U. J., K. R. Murphy, and C. A. Stedmon. 2015. “Fluorescence Quantum Yields of Natural Organic Matter and Organic Compounds: Implications for the Fluorescence-Based Interpretation of Organic Matter Composition.” Frontiers in Marine Science 2. doi:10.3389/fmars.2015.00098.
  • Yakimenko, O., D. A. Khundzhua, A. Izosimov, V. Yuzhakov, and S. Patsaeva. 2018. “Source Indicator of Commercial Humic Products: UV-Vis and Fluorescence Proxies.” Journal of Soils and Sediments 18 (4): 1279–1291. doi:10.1007/s11368-016-1528-9.
  • Zepp, R. G., and P. F. Schlotzhauer. 1981. “Comparison of Photochemical Behavior of Various Humic Substances in Water: III. Spectroscopic Properties of Humic Substances.” Chemosphere 10 (5): 479–486. doi:10.1016/0045-6535(81)90148-X.
  • Zepp, R. G., W. M. Sheldon, and M. A. Moran. 2004. “Dissolved Organic Fluorophores in Southeastern US Coastal Waters: Correction Method for Eliminating Rayleigh and Raman Scattering Peaks in Excitation-Emission Matrices.” Marine Chemistry 89 (1–4): 15–36. doi:10.1016/j.marchem.2004.02.006.
  • Zsolnay, A., E. Baigar, M. Jimenez, B. Steinweg, and F. Saccomandi. 1999. “Differentiating with Fluorescence Spectroscopy the Sources of Dissolved Organic Matter in Soils Subjected to Drying.” Chemosphere 38 (1): 45–50. doi:10.1016/S0045-6535(98)00166-0.

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