...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Science and Health >POU water filters effectively reduce lead in drinking water: a demonstration field study in flint, Michigan
【24h】

POU water filters effectively reduce lead in drinking water: a demonstration field study in flint, Michigan

机译：POU水过滤器有效减少饮用水中的铅：密歇根州弗林特的示范田间研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A field study was conducted to test the effectiveness of faucet-mounted point of use (POU) water filters for removing high concentrations of lead in drinking water from premise plumbing sources and lead service lines (LSL). These filters were concurrently certified for total lead removal under NSF/ANSI Standard 53 (NSF/ANSI-53) and for fine particulate (Class I) reduction under NSF/ANSI Standard 42 (NSF/ANSI-42). In 2016, filtered and unfiltered drinking water samples were collected at over 345 locations in Flint, Michigan. Over 97% of filtered water samples contained lead below 0.5 mu g/L. The maximum lead concentration in filtered water was 2.9 mu g/L, well below the bottled water standard. The effectiveness of the POU activated carbon block filters in reducing lead concentrations, even above the 150 mu g/L NSF/ANSI-53 challenge standard, is likely related to trapping particles due to the small effective pore size of the filters, in addition to ion-exchange or sorption removal of soluble lead. Properly installed and maintained POU filters, certified under both NSF/ANSI-53 (for total lead) and NSF/ANSI-42 (for fine particulate), can protect all populations, including pregnant women and children, by reducing lead in drinking water to levels that would not result in a significant increase in overall lead exposure.
机译：进行了一个田间研究以测试龙头安装点的有效性（POU）水过滤器，用于从前提管道源和铅服务线（LSL）中去除饮用水中的高浓度铅。这些过滤器在NSF / ANSI标准53（NSF / ANSI-53）下并在NSF / ANSI标准42（NSF / ANSI-42）下的细颗粒（I类）降低的总铅去除。在2016年，在密歇根州弗林特的345个地点收集过滤和未过滤的饮用水样品。超过97％的过滤水样含有铅0.5μg/升。过滤水中的最大铅浓度为2.9μg/ l，远低于瓶装水标准。除了滤波器的较小有效孔径尺寸外，沟活性碳块过滤器在降低铅浓度下，甚至高于150μmg/ l nsf / ansi-53攻击标准的有效性。离子交换或吸附去除可溶性铅。正确安装和维护的POU过滤器，通过NSF / ANSI-53（总铅）和NSF / ANSI-42（用于细颗粒），可以通过减少饮用水中的铅来保护所有患有孕妇和儿童的人口不会导致总体铅暴露的显着增加的水平。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号