A Toxic Disinfection By-product, 2,6-Dichloro-1,4-benzoquinone, Identified in Drinking Water


  • We acknowledge the financial support of the Water Research Foundation, the UK Drinking Water Inspectorate, the Natural Sciences and Engineering Research Council of Canada, the Canadian Water Network, the Alberta Ingenuity Water Research Institute, and Alberta Health and Wellness. We thank Dr. Richard Bull and Dr. Dave Reckhow for providing insights on the potential importance of haloquinones as possible DBPs, Dr. Steve E. Hrudey for his perspectives on the public health risks of DBPs, and Dr. X. Chris Le for his constructive comments and suggestions.


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Coming clean? Liquid chromatography–ESI tandem mass spectrometry is used to detect 2,6-dichloro-1,4-benzoquinone (see picture) in drinking water treated with chlorine or chloramine.