Disinfection by-products in swimming pool water: Precursors and chemical reactions of NCl3 formation

ENVR 279

Christian Zwiener, christian.zwiener@ciw.uni-karlsruhe.de, Christina Schmalz, and F. H. Frimmel. Engler-Bunte-Institut, Division of Water Chemistry, University of Karlsruhe, Engler-Bunte-Ring 1, Karlsruhe, 76131, Germany
Swimming in chlorinated pool water and, thus, exposure to DBPs has been linked to adverse health effects. An increased risk of bladder cancer and adverse effects on the respiratory tract have to be mentioned in this context. Often trichloramine (NCl3)–a volatile and irritating compound–has been proposed as a reason for eye and upper respiratory tract irritation. Measures to reduce or prevent NCl3 exposure of bathers have to reduce the precursor compounds and/or impede the corresponding reactions.

In this work we will show a detailed study on precursors and the formation chemistry of NCl3 in pool water. Various nitrogenous compounds with acid amide-type functions contribute to NCl3 formation in dependence of pH. The work also includes the production and characterization of a NCl3 standard, which is not commercially available.

 

Advances in Drinking Water Disinfection and Disinfection Byproduct Management
6:00 PM-8:00 PM, Wednesday, April 9, 2008 Morial Convention Center -- Hall A, Poster

Division of Environmental Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008