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Updated: Nov 17, 2025

Use of a Battery of Chemical and Ecotoxicological Methods for the Assessment of the Efficacy of Wastewater Treatment Processes to Remove Estrogenic Potency
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Ozonation Treatment Increases Chlorophenylacetonitrile Formation in Downstream Chlorination or Chloramination

Di Zhang1,2, Tom Bond3, Mingli Li1,2

  • 1State Key Laboratory of Pollution Control and Resources Reuse, Key Laboratory of Yangtze River Water Environment, Ministry of Education, International Joint Research Center for Sustainable Urban Water System, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.

Environmental Science & Technology
|February 17, 2021
PubMed
Summary

Chlorophenylacetonitriles (CPANs), emerging drinking water disinfection byproducts, are poorly removed and even increased by ozonation. This study identifies low-molecular-weight protein fragments, specifically tyrosine and tryptophan amino acids, as key precursors for CPAN formation.

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