期刊
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
卷 153, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.trac.2022.116624
关键词
Halogenated nitrogenous disinfection; byproducts; Water disinfection; Mass spectrometry; Nontargeted analysis; Sample preparation; Forcing agent
资金
- National Natural Science Foundation of China [22006104]
- Sichuan Science and Technology Project [2021YJ0322]
- Natural Sciences and Engi-neering Research Council of Canada
- Alberta Innovates
- Canada Research Chairs Program
Halogenated nitrogenous disinfection byproducts (X-NDBPs) are unregulated but toxicologically relevant DBPs that can be formed through the substitution of halogens to carbon or nitrogen. Stable X-NDBPs are more toxic than regulated DBPs and play a significant role in the cytotoxicity of disinfected water. Development of simplified sampling techniques, identification of reactive nitrogenous organics in source water, and identification of missing X-NDBPs in disinfected water are necessary for future research.
Halogenated nitrogenous disinfection byproducts (X-NDBPs) are unregulated but toxicologically relevant DBPs of public health concern. The formation of X-NDBPs occurs via substitutions of halogens to carbon (XC-NDBPs) or nitrogen (XN-NDBPs). XC-NDBPs are relatively stable and widely present, while XNNDBPs are generally unstable and difficult to detect in water. Stable X-NDBPs have shown significantly higher toxicity than the regulated DBPs and are forcing agents in the cytotoxicity of disinfected water among known DBPs. Evidence suggests that unknown X-NDBPs are present in tap water. Mass spectrometry (MS) techniques are the most powerful tools for identification of unknown X-NDBPs. Here, we critically evaluate the analytical and toxicological studies of known X-NDBPs, as well as recent advances in MS techniques for identification of unknown X-NDBPs. This review highlights gaps, challenges, and the need for development of simplified sampling techniques, identification of reactive nitrogenous organics in source water, and identification of missing X-NDBPs in disinfected water.(c) 2022 Elsevier B.V. All rights reserved.
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