The occurrence of the herbicide dalapon (2,2-dichloropropionate) in potable water as a disinfection by-product

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Title The occurrence of the herbicide dalapon (2,2-dichloropropionate) in potable water as a disinfection by-product
Author Hawker, Darryl William; Cumming, Janet L.; Watkinson, Andrew; Bartkow, Michael E.
Journal Name Journal of Environmental Monitoring
Year Published 2011
Place of publication United Kingdom
Publisher Royal Society of Chemistry
Abstract Salts of 2,2-dichloropropionic acid, such as dalapon, are well known as herbicides and are regulated as such in potable water in Australia and elsewhere. It is also an identified disinfection by-product (DBP), but little is known about the compound's formation and typical levels from this source. This work presents results from a sampling campaign where 2,2-dichloropropionate was found at levels between 0.1 and 0.5 µg l−1 in potable water samples from a major treatment plant in South East Queensland, Australia. However, levels were below the reporting limit (0.01 µg l−1) in the immediate source water for the plant. Also, temporal trends in 2,2-dichloropropionate observed in treated water during sampling mirrored those of trihalomethanes albeit at much lower concentrations, suggesting that the occurrence is due to in situ formation as a DBP. This could present a regulatory dilemma in some jurisdictions.
Peer Reviewed Yes
Published Yes
Alternative URI
Volume 13
Issue Number 2
Page from 252
Page to 256
ISSN 1464-0325
Date Accessioned 2011-06-23
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Environmental Chemistry (incl Atmospheric Chemistry)
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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