对消毒副产物的形态和浓度进行了变异性研究 （DBPs）在美国的两个饮用水处理厂。两个 植物用不同浓度的溴化物处理地表水，以影响 DBP物种形成。虽然这两种植物都使用氯胺化作为终端消毒剂， 溴化DBP在两个位置的分布存在显著差异 地点。已经进行了比较分析，以评估 两个地点卤代DBP的浓度和形态，特别是总浓度 三卤甲烷（THM4）和总卤乙酸（HAA9）。 目前还没有通过季度DBP来解释不同的DBP物种形成 美国环境保护署授权的监测项目。虽然怀疑健康 与个别DBP物种相关的风险各不相同，目前的监管方法确实如此 不考虑每个副产品组内的物种形成。 本文给出的结果 本文探讨了两个公用事业单位的单个成分浓度，并展示了它们是如何变化的 与副产品组总和THM4和HAA9相关的变化。包括13个参考文献、图表。

Variability has been examined in the speciation and concentration of disinfection byproducts (DBPs) at two drinking water treatment plants in the United States. The two plants treat surface waters with sufficiently different bromide concentrations to impact DBP speciation. Although both plants utilize chloramination as the terminal disinfectant, there is a significant difference between the brominated DBP distributions at the two sites. Comparative analysis has been conducted to evaluate this variability in concentration and speciation of halogenated DBPs at the two sites, specifically for total trihalomethanes (THM4) and total haloacetic acids (HAA9). The differing DBP speciation is not currently accounted for through the quarterly DBP monitoring program mandated by the U.S. Environmental Protection Agency. Although it is suspected that the health risks associated with individual DBP species vary, the current regulatory approach does not account for the speciation within each byproduct group. The results presented in this paper explore the individual constituent concentrations at two utilities and show how they vary in relation to the byproduct group summations, THM4 and HAA9. Includes 13 references, figures.