Organophosphorus Pesticide Degradation Pathways During Drinking Water Treatment

摘要

The United States Food Quality Protection Act (FQPA) of 1996 requires that all potential exposure routes be accessed in order to determine whether pesticide tolerances will be exceeded. Drinking water is considered a dietary exposure pathway; however, few studies have examined the fate of pesticides in the presence of free chlorine under conditions similar to drinking water treatment. Chlorination is the most commonly used chemical disinfection process for community water systems in the United States (1) and is known to react with some pesticides such as the s-triazines and carbamates (2-6).