Accumulation on and extraction of lead from point-of-use filters for evaluating lead exposure from drinking water
Accumulation on and extraction of lead from point-of-use filters for evaluating lead exposure from drinking water
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DOI：
10.1039/d0ew00496k
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发表时间：
2020-10
期刊：
影响因子：
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通讯作者：
Weiyi Pan;E. Johnson;D. Giammar
中科院分区：
文献类型：
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作者：
Weiyi Pan;E. Johnson;D. Giammar
准确量化自来水中的铅暴露可以帮助自来水公司和公共卫生组织评估和缓解铅浓度升高的问题。为此已经开发了几个采样协议；然而，每个现有协议都有与采样时间、样本大小和应用简易性相关的限制。这项研究证实了使用点水龙头过滤器积累铅的能力，然后开发了一种能够定量测定自来水中铅暴露的提取方法。实际自来水和合成自来水中几乎所有的铅都是通过POU过滤器积累的，并对四种不同的提取方法进行了评估。用硝酸溶液一次通过法可获得约100%的铅回收率。这种铅暴露定量方法有可能应用于实际的饮用水系统，为自来水铅暴露提供有效的指示。
The precise quantification of Pb exposure from tap water can help water utilities and public health organizations assess and mitigate elevated Pb concentrations. Several sampling protocols have been developed for this purpose; however, each existing protocol has limitations associated with sampling time, sample sizes, and ease of application. This study confirmed the ability of point-of-use faucet filters to accumulate Pb and then developed an extraction method that can enable quantification of Pb exposure from tap water. Nearly all Pb from both real and synthetic tap water was accumulated on POU filters, and four different methods for extracting the accumulated Pb were evaluated. Approximately 100% Pb recovery was achieved with a single pass flow-through method using a nitric acid solution. This Pb exposure quantification method could potentially be applied to real drinking water systems to provide an effective indication of Pb exposure from tap water.