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FANG Jing-jing,ZHOU Ai-guo,LIU Cun-fu,GAN Yi-qun,ZHOU Jian-wei,CAI He-sheng,LIU Yun-de,ZHANG Yan-peng.Research Progress on Stable Isotope Online Testing Technology for Organic Contaminants[J].Rock and Mineral Analysis,2013,32(2):192-202
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Research Progress on Stable Isotope Online Testing Technology for Organic Contaminants
Received:March 12, 2012  Revised:August 16, 2012
DOI:
Key words: organic contaminants  compound-specific isotope analysis (CSIA)  compound-specific multielement isotope  mass spectrometric technique
Author NameAffiliationE-mail
FANG Jing-jing School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China
School of Graduate, China University of Geosciences (Wuhan), Wuhan 430074, China 
 
ZHOU Ai-guo School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China 
aiguozhou@cug.edu.cn 
LIU Cun-fu School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China 
 
GAN Yi-qun School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China 
 
ZHOU Jian-wei School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China 
 
CAI He-sheng School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China 
 
LIU Yun-de School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China
School of Graduate, China University of Geosciences (Wuhan), Wuhan 430074, China 
 
ZHANG Yan-peng School of Environmental Studies, China University of Geosciences (Wuhan), Wuhan 430074, China
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences (Wuhan), Wuhan 430074, China
School of Graduate, China University of Geosciences (Wuhan), Wuhan 430074, China 
 
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Abstract:
      Compound-specific isotope analysis (CSIA) online is an indispensable key technique for identifying the sources of organic contaminants in the environment and characterizing their transformation processes, but there are still some problems in practical applications. In this study, firstly, the development of six methods for online determination of compound-specific organic isotope analysis was introduced and reviewed, including Gas Chromatography-Isotope Ratio Mass Spectrometer (GC-IRMS), Liquid Chromatography Coupled-Isotope Ratio Mass Spectrometer (LC-IRMS), Direct Introduction-Gas Chromatography-Isotope Ratio Mass Spectrometer (DI-GC-IRMS), Gas Chromatography-Quadrupole Mass Spectrometer (GC-qMS), Gas Chromatography-Multicollector Inductively Coupled Plasma-Mass Spectrograph (GC-MC-ICPMS) and Gas Chromatography-Cavity Ring-Down Spectroscopy (GC-CRDS). Secondly, five noteworthy problems in online testing were proposed: sample pre-concentration, Gas Chromatography (GC) and Liquid Chromatography (LC) separation, selection of instruments and methods, the development of organic compound stable isotope standard material and safety control. Finally, three suggestions were proposed: 1) to develop vigorously the direct injection technology without combustion, such as GC-qMS and GC-CRDS, 2) to continually develop the determination technology for organic chlorine and organic bromine isotopes and 3) to rapidly develop international stable isotope standards for organic compounds. The new understanding in this study was that when multi-element isotope analysis was applied to study compound-specific isotopes, direct injection technology without combustion was the optimal choice.