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| On-line Isotopic Analysis by Chromatography Coupled to MC－ICP－MS |
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| DOI： |
| KeyWord:chromatography multiple-collector inductively coupled plasma mass spectrometry（MC－ICP－MS） species－specific stable isotopes metal stable isotopes |
| Author | Institution |
| DU Yuan-yuan,ZHU Zhen-li,ZHENG Hong-tao,LIU Xing |
1. State Key Laboratory of Biogeology and Environmental Geology，China University of Geosciences，Wuhan ，China;
2. Faculty of Materials Science and Chemistry，China University of Geosciences， Wuhan ，China |
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| Abstract: |
| In recent years，with the development of multiple-collector inductively coupled plasma mass spectrometry（MC－ICP－MS），metal isotope analysis has gradually become an effective tool to study the cycle of metal elements，understanding their migration and transformation，and tracing pollution. However，metals and nonmetals in the environment typically exist with different chemical speciation，so the development of new methods for on-line analysis of species－specific stable isotopes will open a new perspective for better understanding the element cycle and various chemical and biological processes．Combination of chromatography with MC－ICP－MS has attracted an increasing attention in recent years as it could realize the online separation of matrix and interference elements in the sample，greatly reducing the time of sample pretreatment，saving the cost，reducing the cross-contamination that may occur in the process of sample separation and purification，and accordingly making it possible to quickly obtain high-precision isotope ratio．Furthermore，it could also obtain the species－specific stable isotope composition of different elements，which is helpful to better understand the biogeochemical cycle of different element speciation，providing ideas and tools for understanding and solving geological，life and environmental problems．In this paper，the representative work on isotope analysis by chromatography coupled to MC－ICP－MS from 2000 to 2021 is reviewed．The transient signal processing methods and mass bias correction methods affecting the chromatography coupled to MC－ICP－MS are discussed and summarized．Finally，the applications of this method in geochemical，environmental and biological fields are also briefly summarized，and the development of isotopic analysis by chromatography coupled to MC－ICP－MS is prospected. |
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