AWWA WQTC65988

AWWA WQTC65988 Methods for the Analysis of Priority DBPs in RO-Concentrated Drinking Water
Conference Proceeding by American Water Works Association, 11/01/2007

Bodin, N.; Weinberg, H.S.; Krasner, S.W.; Richardson, S.D.; Pressman, J.G.; Speth, T.F.; Miltner, R.J.; Simmons, J.E.

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The objectives of this powerpoint presentation on disinfection byproduct (DBP) analysis in chlorinated reverse osmosis (RO) concentrates included:adaptation of analytical methods for 8 priority DBPs, matrix effect;stability of the DBPs over the course of holding time experiments; effectiveness and potential application of the methods developedfor chlorinated RO concentrates; and, comparison with those used in analysis of U.S. drinking watersU.S. Nationwide Study (Weinberg et al., 2002, Krasner et al., 2006). Conclusions of the study included: DBP analyses in complex matrix achieved with high degree of QCusing standard addition or external calibration, and matrix dilution;matrix effect correlates with Ksubow/sub;some DBPs undergo more rapid loss during sample preservation andholding than others;multiple DBP groups quantified in the chlorinated RO concentrates atlevels not observed in full-scale drinking water treatment; and,RO concentration permitted observation of yet additional DBPs nottargeted in this study. Includes tables, figures.