期刊
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
卷 52, 期 22, 页码 3973-3996出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10643389.2021.1993053
关键词
Brominated Organic Compounds (BOCs); Compound-Specific Isotope Analysis (CSIA); Transformation Mechanism; Albert Juhasz and Lena Ma
资金
- National Natural Science Foundation of China [41991312, 42177192, 41731279, 41703089]
- National key research and development project [2019YFC1804504, 2019YFC1804503]
This article introduces the current analytical methods for measuring the stable isotopes of carbon, hydrogen, oxygen, and bromine in BOCs using mass spectrometry. It discusses the applications for identifying sources, tracing transformation pathways, and biological metabolisms, as well as the challenges and prospects regarding bromine isotope effects, multiple isotope enrichment, and position-specific isotope analysis. It also highlights the future activities that may benefit the development of the fast-growing field of CSIA.
Brominated organic compounds (BOCs) originate from nature and anthropogenic activities, and are plentiful in the environment. Most BOCs are hazardous and pose significant risk to the environment and human health. Controlling these pollutants requires understanding their sources, behaviors, and final environmental fates. Compound-specific isotope analysis (CSIA), which has been a new important tool for scientific breakthrough in many research areas, such as environmental, ecological, and geochemical sciences, can help scientists elucidate the sources, transformation pathways and fates of BOCs. The appearance of gas chromatography combustion isotope ratio mass spectrometry (GC/C/IRMS) and gas chromatography multiple collector inductively coupled plasma mass spectrometry (GC/MC/ICPMS) in the past decades, has greatly developed the application of CSIA for the stable isotope analysis of BOCs. This review first describes the current analytical methods for measuring the carbon, hydrogen, oxygen and bromine stable isotopes of BOCs using mass spectrometry. Then, the review discusses the application for identifying sources, tracing transformation pathways and biological metabolisms. This includes a discussion of the kinetic isotope effects (KIEs), evaluated using (bio)chemical reaction, based on the reaction mechanism. Finally, the review highlights the future challenges and prospects regarding bromine isotope effects, multiple isotope enrichment, and position-specific isotope analysis. This review ends with a perspective on future activities that may benefit the development of the fast-growing field of CSIA.
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