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SURVEY OF HALONITROMETHANES AND IODOMETHANES: DISINFECTION BY-PRODUCTS IN DRINKING WATER
Citation:
Thruston Jr., A D., S D. Richardson, C. RavAcha, AND V. Glezer. SURVEY OF HALONITROMETHANES AND IODOMETHANES: DISINFECTION BY-PRODUCTS IN DRINKING WATER. Presented at 48th American Society for Mass Spectrometry Conference, Long Beach, CA, June 11-15, 2000.
Impact/Purpose:
(1) Use toxicity-based approach to identify DBPs that show the greatest toxic response. (2) Comprehensively identify DBPs formed by different disinfectant regimes for the 'Four Lab Study'. (3) Determine the mechanisms of formation for potentially hazardous bromonitromethane DBPs.
Description:
This project involves the study of two classes of chemicals, halonitromethanes and iodomethanes, which have been found to be drinking water disinfection by-products (DBPs). Both have been predicted to have toxicity. In toxicity screening tests, bromonitromethanes have been shown to be mutagenic in both bacterial and in mammalian cell assays.
Halonitromethanes and iodomethanes were measured in drinking water from Louisiana and Israel. Louisiana drinking water samples were treated with ozone followed by chlorine or chloramine. Israel samples were treated with chlorine dioxide. lodomethanes are also associated with drinking water taste and odor problems.