Interference in the bactericidal properties of inorganic chloramines by organic nitrogen compounds

The amino acid, glycine, was used to increase the concentrations of organic nitrogen in samples of water from a treated-water reservoir. The bactericidal activity was reduced by glycine concentrations as low as 0.1 mg nitrogen per litre, but no reduction in bactericidal effect was observed when pref...

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Bibliographic Details
Published in:Environmental science & technology 1985-12, Vol.19 (12), p.1192-1195
Main Authors: Wolfe, Roy L, Ward, N. Robert, Olson, Betty H
Format: Article
Language:English
Subjects:
Applied sciences
Drinking water and swimming-pool water. Desalination
Exact sciences and technology
glycine
Pollution
Water treatment and pollution
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Summary:The amino acid, glycine, was used to increase the concentrations of organic nitrogen in samples of water from a treated-water reservoir. The bactericidal activity was reduced by glycine concentrations as low as 0.1 mg nitrogen per litre, but no reduction in bactericidal effect was observed when preformed chloramines were tested in the presence of glycine. The ammonia-derived inorganic chloramine residuals and the glycine-derived organic chloramine residuals could not be distinguished from each other by conventional analytical techniques. The use of such techniques to measure residual concentrations might therefore, not indicate the true disinfection potential of chloramines.
ISSN:0013-936X
1520-5851
DOI:10.1021/es00142a009