Record Display for the EPA National Library Catalog


Main Title Importance of Sample pH on Recovery of Mutagenicity from Drinking Water by XAD Resins.
Author Ringhand, H. P. ; Meier, J. R. ; Kopfler, F. C. ; Schenck, K. M. ; Kaylor, W. H. ;
CORP Author Health Effects Research Lab., Cincinnati, OH. Toxicology and Microbiology Div.
Year Published 1987
Report Number EPA/600/J-87/081;
Stock Number PB88-107123
Additional Subjects Organic compounds ; Chlorination ; Potable water ; Toxicology ; pH ; Water analysis ; Acidity ; Environmental impact ; Reprints ; Mutagenicity ; Health risks
Library Call Number Additional Info Location Last
NTIS  PB88-107123 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Sample pH and the presence of a chlorine residual were evaluated for their effects on the recovery of mutagenicity in drinking water following concentration by XAD resins. The levels of mutagenicity in the pH 2 concentrates were 7-8 fold higher than those of the pH 8 concentrates, suggesting that acidic compounds accounted for the majority of the mutagenicity. The presence of a chlorine residual had little effect on the levels of mutagenicity at either pH. Comparisons of the mutagenic activity for the pH 2 resin concentrates vs. pH 8 concentrates prepared by lyophilization further indicated that the acidic mutagens were products of disinfection with chlorine and not artifacts of the sample acidification step in the concentration procedure.