Changes in blood trihalomethane concentrations resulting from differences in water quality and water use activities
Changes in blood trihalomethane concentrations resulting from differences in water quality and water use activities
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DOI：
10.3200/aeoh.60.1.7-15
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发表时间：
2005-01-01
期刊：
影响因子：
--
通讯作者：
Masters, John
中科院分区：
文献类型：
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作者：
Ashley, David L.;Blount, Benjamin C.;Masters, John
水消毒对于保障公众健康极为重要；然而，它也会形成副产品，包括三卤甲烷 (THM)。之前关于消毒副产品对健康影响的研究缺乏准确的方法来量化随时间的暴露情况。作为建立更好的暴露评估系统的第一步，作者调查了哪些家庭用水活动导致 THM 内部剂量浓度显着增加。在这项研究中，2 个不同城市的 7 名受试者进行了 12 项涉及用水的常见活动。在其中 3 项活动（洗澡、淋浴和用手洗碗）中，THM 的血液浓度大幅增加。对数据的进一步分析表明，自来水浓度主要控制沐浴暴露的血液浓度，而用水产生的自来水浓度和环境空气浓度则影响淋浴暴露的血液浓度。进一步的研究将集中于这些活动中可能改变暴露程度的变量。
Water disinfection is extremely important for the protection of public health; however, it also forms by-products, including trihatomethanes (THMs). Previous studies of health effects from disinfection by-products have lacked accurate methods to quantify exposure over time. As a first step in establishing a better system for exposure assessment, the authors investigated which household water use activities cause a significant increase in internal dose concentrations of THMs. In this study, 7 subjects in 2 different cities carried out 12 common activities that involved water use. In 3 of these activities-bathing, showering, and washing dishes by hand-the blood concentrations of THMs increased substantially. Further analysis of the data suggested that tap water concentrations primarily controlled the blood concentrations from bathing exposure, whereas tap water concentrations and ambient air concentrations resulting from water use affected the blood concentrations from showering exposure. Further studies will focus on variables in these activities that can alter exposure.