Knotted Reactors and their Role in Flow‐Injection On‐line Preconcentration Systems Coupled to Atomic Spectrometry‐Based Detectors

References

• Fang , Z.‐L. , Xu , S.‐K. , Dong , L.‐P. and Li , W.‐Q. 1994 . Determination of cadmium in biological materials by flame AAS with flow injection on‐line sorption preconcentration . Talanta , 41 : 2165 – 2172 .
   PubMed Web of Science ®Google Scholar
• Sperling , M. , Yan , X.‐P. and Welz , B. 1996 . Investigation of on‐line coupling electrothermal atomic absorption spectrometry with flow injection sorption preconcentration using a knotted reactor for totally automatic determination of lead in water samples . Spectrochim. Acta Part B , 51 : 1891 – 1908 .
   Web of Science ®Google Scholar
• Yan , X.‐P. , Van Mol , W. and Adams , F. 1996 . Determination of ultratrace amounts of antimony(III) in water by flow injection sorption preconcentration in a knotted reactor coupled with electrothermal atomic absorption spectrometry . Analyst , 121 : 1061 – 1067 .
   Web of Science ®Google Scholar
• Fang , Z.‐L. and Dong , L.‐P. 1992 . Flow‐injection on‐line coprecipitation for electrothermal atomic absorption spectrometry . J. Anal. Atom. Spectrom. , 7 : 439 – 446 .
   Web of Science ®Google Scholar
• Tao , G.‐H. and Hansen , E.‐H. 1994 . Determination of ultra‐trace amounts of selenium(IV) by flow injection hydride generation atomic absorption spectrometry with online preconcentration by coprecipitation with lanthanum hydroxide . Analyst , 119 : 333 – 337 .
   Web of Science ®Google Scholar
• Nielsen , S. , Sloth , J. J. and Hansen , E. H. 1996 . Determination of ultra‐trace amounts of selenium(IV) by flow injection hydride generation atomic absorption spectrometry with online preconcentration by co‐precipitation with lanthanum hydroxide. Part II. On‐line addition of co‐precipitating agent . Analyst , 121 : 31 – 35 .
   Web of Science ®Google Scholar
• Nielsen , S. , Sloth , J. J. and Hansen , E. H. 1996 . Determination of ultra‐trace amounts of arsenic(III) by flow‐injection hydride generation atomic absorption spectrometry with on‐line preconcentration by coprecipitation with lanthanum hydroxide or hafnium hydroxide . Talanta , 43 : 867 – 880 .
   PubMed Web of Science ®Google Scholar
• Johnson , D. A. and Florence , T. M. 1971 . Spectrophotometric determination of uranium(VI) with 2‐(5‐bromo‐2‐pyridylazo)‐5‐diethylaminophenol (5‐Br‐PADAP) . Anal. Chim. Acta , 53 : 73 – 79 .
   Web of Science ®Google Scholar
• Martinez , L. , Gásquez , J. , Olsina , R. and Marchevsky , E. 1996 . Spectrophotometric determination of neodymium in high sensitivity conditions in rocks with 2‐(5‐bromo‐2‐pyridylazo)‐5‐diethylaminophenol (5‐Br‐PADAP) . Chem. Anal. (Warsaw) , 41 : 275 – 282 .
   Google Scholar
• Martinez , L. , Perino , E. , Marchevsky , E. and Olsina , R. 1993 . Spectrometric determination of gadolinium(III) with 2‐(5‐bromo‐2‐pyridylazo)‐5‐diethylaminophenol (5‐Br‐PADAP) . Talanta , 40 : 385 – 390 .
   PubMed Web of Science ®Google Scholar
• Krasiejko , M. and Marczenko , Z. 1986 . Sensitive spectrophotometric determination of vanadium with 2‐(5‐bromo‐2‐pyridylazo)‐5‐diethylaminophenol (5‐Br‐PADAP) . Mikrochim. Acta , 3 : 89 – 94 .
   Google Scholar
• Wuilloud , R. G. , Salonia , J. A. , Olsina , R. A. and Martinez , L. D. 2000 . Determination of vanadium(V) in drinking water by flow injection and pre‐concentration in a knotted reactor by inductively coupled plasma optical emission spectrometry with ultrasonic nebulization . Spectrochim. Acta Part B , 55 : 671 – 680 .
   Google Scholar
• Salonia , J. A. , Wuilloud , R. G. , Gásquez , J. A. , Olsina , R. A. and Martinez , L. D. 2000 . On‐line complexation of zinc with S‐Br‐PADAP and preconcentration using a knotted reactor for inductively coupled plasma atomic emission spectrometric determination in river water samples . Fresenius J. Anal. Chem. , 367 : 653 – 657 .
   PubMedGoogle Scholar
• De Wuilloud , J. C.A. , Wuilloud , R. G. , Gásquez , J. A. , Olsina , R. A. and Martinez , L. D. 2001 . On‐line adsorption/preconcentration using a knotted reactor for total Hg determination in drinking water by flow injection CV‐AAS . Atom. Spectrosc. , 22 ( 5 ) : 398 – 404 .
   Google Scholar
• Lara , R. F. , Wuilloud , R. G. , Salonia , J. A. , Olsina , R. A. and Martinez , L. D. 2001 . Determination of low cadmium concentrations in wine by on‐line preconcentration in a knotted reactor coupled to an inductively coupled plasma optical emission spectrometer with ultrasonic nebulization . Fresenius' J. Anal. Chem. , 371 ( 7 ) : 989 – 993 .
   PubMedGoogle Scholar
• Fernandez Orsi , R. , Wuilloud , R. G. , De Wuilloud , J. C.A. , Olsina , R. A. and Martinez , L. D. 2002 . On‐line preconcentration and determination of cadmium in honey using knotted reactor coupled to flow injection‐flame atomic absorption spectrometry . J. AOAC Int. , 85 : 1410 – 1414 .
   PubMedGoogle Scholar
• Farias , G. M. , Moyano , S. , Gásquez , J. A. , Wuilloud , R. and Martinez , L. D. 2002 . Determination of cobalt by ICP‐AES in drinking water samples using a knotted reactor with flow‐injection on‐line . J. Argentine Chem. Soc. , 90 : 77 – 86 .
   Google Scholar
• Cerutti , S. , Salonia , J. A. , Gásquez , J. A. , Olsina , R. A. and Martinez , L. D. 2003 . Determination of scandium in river water by ICP‐OES with flow‐injection on‐line preconcentration using knotted reactor and ultrasonic nebulization . J. Anal. Atom. Spectrom. , 18 : 1198 – 1201 .
   Web of Science ®Google Scholar
• Tsakovski , S. , Benkhedda , K. , Ivanova , E. and Adams , F. C. 2002 . Comparative study of 8‐hydroxyquinoline derivatives as chelating reagents for flow‐injection preconcentration of cobalt in a knotted reactor . Anal. Chim. Acta , 453 : 143 – 154 .
   Web of Science ®Google Scholar
• Dong , L. and Fang , Z. 1994 . Determination of trace cobalt, nickel and cadmium by online flow injection analysis with coprecipitation preconcentration FAAS . Guangpuxue Yu Guangpu Fenxi , 14 ( 1 ) : 85 – 90 .
   Google Scholar
• Ivanova , E. , Yan , X.‐P. , Van Mol , W. and Adams , F. 1997 . Determination of thallium in river sediment by flow injection on‐line sorption preconcentration in a knotted reactor coupled with electrothermal atomic absorption spectrometry . Analyst , 122 : 667 – 671 .
   Web of Science ®Google Scholar
• Yan , X.‐P. , Van Mo , W. and Adams , F. 1997 . Flow‐injection online sorption preconcentration in a knotted reactor for electrothermal atomic absorption spectrometric determination of ultratrace amounts of cobalt in natural waters . Lab. Robotics Automat. , 9 ( 4 ) : 191 – 199 .
   Google Scholar
• Nielsen , S. and Hansen , E. H. 1998 . Selective flow‐injection quantification of ultra‐trace amounts of Cr(VI) via on‐line complexation and preconcentration with APDC followed by determination by electrothermal atomic absorption spectrometry . Anal. Chim. Acta , 366 : 163 – 176 .
   Web of Science ®Google Scholar
• Ivanova , E. , Benkhedda , K. and Adams , F. 1998 . Determination of copper, manganese and nickel in biological samples and sea‐water by flow injection on‐line sorption preconcentration in a knotted reactor coupled with electrothermal atomic absorption spectrometry . J. Anal. Atom. Spectrom. , 13 : 527 – 531 .
   Web of Science ®Google Scholar
• Velasco‐Arjona , A. , Luque de Castro , M. D. , Ivanova , E. and Adams , F. 1998 . Robotic sample pretreatment coupled with flow‐injection online sorption preconcentration‐electrothermal atomic absorption spectrometry for the determination of copper in environmental and biological materials . Lab. Robotics Automat. , 10 ( 5 ) : 293 – 298 .
   Google Scholar
• Ivanova , E. and Adams , F. 1998 . Flow injection on‐line sorption preconcentration of platinum in a knotted reactor coupled with electrothermal atomic absorption spectrometry . Fresenius J. Anal. Chem. , 361 : 445 – 450 .
   Google Scholar
• Yan , X.‐P. , Kerrich , R. and Hendry , M. J. 1998 . Determination of (ultra) trace amounts of arsenic(III) and arsenic(V) in water by inductively coupled plasma mass spectrometry coupled with a flow‐injection on‐line sorption preconcentration and separation in a knotted reactor . Anal. Chem. , 70 ( 22 ) : 4736 – 4742 .
   PubMedGoogle Scholar
• Nielsen , S. C. , Sturup , S. , Spliid , H. and Hansen , E. H. 1999 . Selective flow injection analysis of ultra‐trace amounts of Cr(VI), preconcentration of it by solvent extraction, and determination by electrothermal atomic absorption spectrometry (ETAAS) . Talanta , 49 : 1027 – 1044 .
   PubMed Web of Science ®Google Scholar
• Nielsen , S. C. and Hansen , E. H. 2000 . Interfacing flow injection analysis (sequential injection analysis) and electro‐thermal atomic absorption spectrometry determination of trace‐levels of Cr(VI) via on‐line pre‐concentration by adsorption in a knotted reactor and by liquid–liquid extraction . Anal. Chim. Acta , 422 : 47 – 62 .
   Web of Science ®Google Scholar
• Benkhedda , K. , Goenaga Infante , H. , Ivanova , E. and Adams , F. 2000 . Ultratrace determination of cobalt in natural waters by electrothermal atomic absorption spectrometry using flow‐injection on‐line sorption preconcentration in a knotted reactor precoated with 1‐phenyl‐3‐methyl‐benzoylpyrazol‐5‐one . J. Anal. Atom. Spectrom. , 15 : 429 – 434 .
   Web of Science ®Google Scholar
• Benkhedda , K. , Goenaga Infante , H. , Ivanova , E. and Adams , F. C. 2000 . Trace metal analysis of natural waters and biological samples by axial inductively coupled plasma time of flight mass spectrometry (ICP‐TOFMS) with flow injection on‐line adsorption preconcentration using a knotted reactor . J. Anal. Atomic Spectrom. , 15 : 1349 – 1356 .
   Web of Science ®Google Scholar
• Yan , X.‐P. , Hendry , M. J. and Kerrich , R. 2000 . Speciation of dissolved iron(III) and iron(II) in water by on‐line coupling of flow injection separation and preconcentration with inductively coupled plasma mass spectrometry . Anal. Chem. , 72 : 1879 – 1884 .
   PubMed Web of Science ®Google Scholar
• Som‐Aum , W. , Liawruangrath , S. and Hansen , E. H. 2002 . Flow injection on‐line preconcentration of low levels of Cr(VI) with detection by ETAAS. Comparison of using an open tubular PTFE knotted reactor and a column reactor packed with PTFE beads . Anal. Chim. Acta , 463 : 99 – 109 .
   Google Scholar
• Liawruangrath , S. , Som‐Aum , W. and Townshend , A. 2002 . A comparison of enrichment factor of knotted and serpentine reactors using flow injection sorption and preconcentration for the off‐line determination of some trace elements by inductively coupled plasma mass spectrometry . Talanta , 58 : 1177 – 1184 .
   PubMed Web of Science ®Google Scholar
• Li , Y. , Jiang , Y. and Yan , X.‐P. 2002 . Determination of trace mercury in environmental and foods samples by online coupling of flow injection displacement sorption preconcentration to electrothermal atomic absorption spectrometry . Environ. Sci. Technol. , 36 : 4886 – 4891 .
   PubMed Web of Science ®Google Scholar
• Li , Y. , Jiang , Y. , Yan , X.‐P. , Peng , W.‐J. and Wu , Y.‐Y. 2002 . A flow injection on‐line multiplexed sorption preconcentration procedure coupled with flame atomic absorption spectrometry for determination of trace lead in water, tea, and herb medicines . Anal. Chem. , 74 : 1075 – 1080 .
   PubMedGoogle Scholar
• Yan , X.‐P. , Yin , X. B. , He , X. W. and Jiang , Y. 2002 . Flow injection on‐line sorption preconcentration coupled with hydride generation atomic fluorescence spectrometry for determination of (ultra)trace amounts of arsenic(III) and arsenic(V) in natural water samples . Anal. Chem. , 74 ( 9 ) : 2162 – 2166 .
   PubMedGoogle Scholar
• Yan , X.‐P. and Adams , F. 1997 . Flow injection on‐line sorption. Separation and preconcentration with a knotted reactor for electrothermal atomic absorption spectrometric determination of lead in biological and environmental samples . J. Anal. Atom. Spectrom. , 12 : 459 – 464 .
   Web of Science ®Google Scholar
• Ivanova , E. , Yan , X.‐P. and Adams , F. 1997 . Determination of bismuth in cod muscle, lake and river sediment by flow‐injection on‐line sorption preconcentration in a knotted reactor coupled with electrothermal atomic absorption spectrometry . Anal. Chim. Acta , 354 : 7 – 13 .
   Web of Science ®Google Scholar
• Ivanova , E. , Van Mol , W. and Adams , F. 1998 . Electrothermal atomic absorption spectrometric determination of cadmium and lead in blood using flow injection on‐line sorption preconcentration in a knotted reactor . Spectrochim. Acta Part B , 53 : 1041 – 1048 .
   Web of Science ®Google Scholar
• Pei , S. and Fang , Z. 1994 . Flame atomic absorption spectrometric determination of silver in geological materials using a flow‐injection system with on‐line preconcentration by coprecipitation with diethyldithiocarbamate . Anal. Chim. Acta , 294 ( 2 ) : 185 – 193 .
   Google Scholar
• Chen , H. , Xu , S. and Fang , Z. 1994 . Determination of copper in water and rice samples by flame atomic absorption spectrometry with flow‐injection online adsorption preconcentration using a knotted reactor . Anal. Chim. Acta , 298 ( 2 ) : 167 – 173 .
   Web of Science ®Google Scholar
• Chen , H. and Beauchemin , D. 2000 . Determination of copper in saline water using flow injection on‐line precipitation coupled with inductively coupled plasma mass spectrometry . Canadian J. Anal. Sci. Spectrosc. , 45 ( 3 ) : 84 – 89 .
   Google Scholar
• Chen , H. H. and Beauchemin , D. 2001 . Determination of trace metals in saline water using flow injection on‐line precipitation coupled with inductively coupled plasma mass spectrometry . J. Anal. Atom. Spectrom. , 16 : 1356 – 1363 .
   Google Scholar
• Yan , X.‐P. , Li , Y. and Jiang , Y. 2002 . A flow injection on‐line displacement/sorption preconcentration and separation technique coupled with flame atomic absorption spectrometry for the determination of trace copper in complicated matrices . J. Anal. Atom. Spectrom. , 17 : 610 – 615 .
   Web of Science ®Google Scholar
• Liu , J. , Chen , H. , Mao , X. and Jin , X. 2000 . Determination of trace copper, lead, cadmium, and iron in environmental and biological samples by flame atomic absorption spectrometry coupled to flow injection on‐line coprecipitation preconcentration using DDTC‐nickel as coprecipitate carrier . Int. J. Environ. Anal. Chem. , 76 ( 4 ) : 267 – 282 .
   Web of Science ®Google Scholar
• Jin , J. , Chen , H. and Shen , X. 1996 . Determination of trace lead in water by flame atomic absorption spectrometry coupled with flow injection online preconcentration . Fenxi Huaxue , 24 ( 8 ) : 957 – 960 .
   Google Scholar
• Jin , J. and Chen , H. 1997 . FAAS determination of trace lead in waters and human hair by using online flow injection coprecipitation with zinc diethyldithiocarbamate as carrier . Fenxi Ceshi Xuebao , 16 ( 1 ) : 22 – 26 .
   Google Scholar
• Chen , H. , Jin , J. and Wang , Y. 1997 . Flow injection on‐line coprecipitation–preconcentration system using copper(II) diethyldithiocarbamate as carrier for flame atomic absorption spectrometric determination of cadmium, lead and nickel in environmental samples . Anal. Chim. Acta , 353 : 181 – 188 .
   Web of Science ®Google Scholar
• Mao , X. , Chen , H. and Liu , J. 1998 . Determination of trace amount of silver by atomic‐absorption‐spectrometry coupled flow injection on‐line coprecipitation preconcentration using DDTC‐copper as coprecipitate carrier . Microchem. J. , 59 : 383 – 391 .
   Web of Science ®Google Scholar
• Salonia , J. A. , Wuilloud , R. G. , Ga´squez , J. A. , Olsina , R. A. and Martinez , L. D. 1999 . Determination of lead in tap water by ICP‐AES with flow‐injection on‐line adsorption preconcentration using a knotted reactor and ultrasonic nebulization . J. Anal. Atom. Spectrom. , 14 : 1239 – 1243 .
   Web of Science ®Google Scholar
• Benkhedda , K. , Dimitrova , B. , Goenaga Infante , H. , Ivanova , E. and Adams , F. C. 2003 . Simultaneous on‐line preconcentration and determination of Pt, Rh and Pd in urine, serum and road dust by flow injection combined with inductively coupled plasma time‐of‐flight mass spectrometry . J. Anal. Atom. Spectrom. , 18 : 1019 – 1025 .
   Web of Science ®Google Scholar
• Shuyu , C. , Zhifeng , Z. and Huaming , Y. 2002 . Dithione as chelator in the flow injection separation and pre‐concentration system of trace metals in biological samples . Anal. Chim. Acta , 451 : 305 – 311 .
   Google Scholar
• Zou , H. , Xu , S. and Fang , Z. 1996 . Determination of chromium in environmental samples by flame AAS with flow injection online coprecipitation . Atom. Spectrosc. , 17 ( 3 ) : 112 – 118 .
   Google Scholar
• Zou , H. , Jiang , G. , Xu , S. and Fang , Z. 1997 . Determination of Cr(III) and Cr(VI) in natural water samples with flow injection online coprecipitation . Changchun Dizhi Xueyuan Xuebao , 27 ( 4 ) : 464 – 468 .
   Google Scholar
• Fang , Z. , Sperling , M. and Welz , B. 1991 . Flame atomic absorption spectrometric determination of lead in biological samples using a flow injection system with on‐line preconcentration by coprecipitation without filtration . J. Anal. Atom. Spectrom. , 6 ( 4 ) : 301 – 306 .
   Google Scholar
• Benkhedda , K. , Goenaga Infante , H. , Ivanova , E. and Adams , F. 2000 . Electrothermal atomic absorption spectrometric determination of cobalt in biological samples and natural waters using a flow injection system with on‐line preconcentration by ion‐pair adsorption in a knotted reactor . Fresenius J. Anal. Chem. , 368 : 288 – 292 .
   PubMedGoogle Scholar
• Yebra , M. C. , Enríquez , M. F. and Cespón , R. M. 2000 . Preconcentration and flame atomic absorption spectrometry determination of cadmium in mussels by an on‐line continuous precipitation–dissolution flow system . Talanta , 52 : 631 – 636 .
   PubMed Web of Science ®Google Scholar
• Martín‐Esteban , Garcinuño , R. M. , Angelino , S. , Fernández , P. and Cámara , C. 1999 . Determination of trace metals in waters and compost by on‐line precipitation coupled to flame atomic absorption spectrophotometry or ion chromatography . Talanta , 48 : 959 – 966 .
   PubMedGoogle Scholar
• Ye , Q.‐Y. , Li , Y. , Jiang , Y. and Yan , X.‐P. 2002 . Determination of trace lead in water samples by flow injection on‐line filterless precipitation–dissolution preconcentration coupled with flame AAS . Atom. Spectrosc. , 23 ( 5 ) : 154 – 159 .
   Google Scholar
• Yan , X.‐P. , Kerrich , R. and Hendry , M. J. 1999 . Flow injection on‐line group preconcentration and separation of (ultra)trace rare earth elements in environmental and geological samples by precipitation using a knotted reactor as a filterless collector for inductively coupled plasma mass spectrometric determination . J. Anal. Atom. Spectrom. , 14 : 215 – 221 .
   Web of Science ®Google Scholar
• Burguera , J. L. , Burguera , M. , Rondón , C. , Carrero , P. , Brunetto , M. R. and Petit de Peña , Y. 2000 . Determination of beryllium in natural and waste waters using on‐line flow‐injection preconcentration by precipitation:dissolution for electrothermal atomic absorption spectrometry . Talanta , 52 : 27 – 37 .
   PubMed Web of Science ®Google Scholar
• Benkhedda , K. , Ivanova , E. and Adams , F. 1999 . Flow injection on‐line sorption preconcentration of trace amounts of copper and manganese in a knotted reactor precoated with 1‐phenyl‐3‐methyl‐4‐benzoylpyrazol‐5‐one coupled with electrothermal atomic absorption spectrometry . J. Anal. Atom. Spectrom. , 14 : 957 – 961 .
   Web of Science ®Google Scholar
• Benkhedda , K. , Goenaga Infante , H. , Ivanova , E. and Adams , F. C. 2001 . Determination of subparts‐per‐trillion levels of rare earth elements in natural waters by inductively coupled plasma time‐of‐flight mass spectrometry after flow injection on‐line sorption Carrero, P.; Brunetto, M.R.; Petit de Pena, waste waters using on‐line flow‐injection for electrothermal atomic absorptionpreconcentration in a knotted reactor . J. Anal. Atom. Spectrom. , 16 : 995 – 1001 .
   Web of Science ®Google Scholar