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DOI | 10.1021/es505886h |
Low Contribution of PbO2-Coated Lead Service Lines to Water Lead Contamination at the Tap | |
Triantafyllidou, Simoni1; Schock, Michael R.2; DeSantis, Michael K.1; White, Colin3 | |
发表日期 | 2015-03-17 |
ISSN | 0013-936X |
卷号 | 49期号:6页码:3746-3754 |
英文摘要 | To determine if residential water sampling corroborates the expectation that formation of stable PbO2 coatings on lead servke lines (LSLs) provides an effective lead release control strategy, lead profile sampling was evaluated for eight home kitchen taps in three US. cities with observed PbO2-coated LSLs (Newport, Rhode Island; Cincinnati and Oakwood, Ohio). After various water standing times, these LSLs typically released similar or,lower peak lead levels (1 to 18 mu g/L) than the lead levels from the respective kitchen faucets (1 to 130 mu g/L); and frequently 50-80% lower than the lead levels typically reported from Pb(II)-coated LSLs in comparable published sampling studies. Prolonged stagnation (10-101 h) at the Cincinnati sites produced varying results. One site showed minimal (0-4 mu g/L) increase in lead release from the PbO2-coated LSL, and persistence of free chlorine residual. However, the other site showed up to a 3-fold increase proportional to standing time) with essentially full depletion of the chlorine residual. Overall, lead release was consistently much lower than that reported in studies of Pb(II)-coated LSL scales, suggesting that natural formation of PbO2 in LSLs is an effective lead "corrosion" control strategy. |
语种 | 英语 |
WOS记录号 | WOS:000351324400057 |
来源期刊 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/59020 |
作者单位 | 1.US EPA, ORISE, Cincinnati, OH 45268 USA; 2.US EPA, Water Supply & Water Resources Div, Natl Risk Management Res Lab, Cincinnati, OH 45268 USA; 3.Univ Cincinnati, Dept Biomed Chem & Environm Engn, Coll Engn & Appl Sci, Cincinnati, OH 45221 USA |
推荐引用方式 GB/T 7714 | Triantafyllidou, Simoni,Schock, Michael R.,DeSantis, Michael K.,et al. Low Contribution of PbO2-Coated Lead Service Lines to Water Lead Contamination at the Tap[J]. 美国环保署,2015,49(6):3746-3754. |
APA | Triantafyllidou, Simoni,Schock, Michael R.,DeSantis, Michael K.,&White, Colin.(2015).Low Contribution of PbO2-Coated Lead Service Lines to Water Lead Contamination at the Tap.ENVIRONMENTAL SCIENCE & TECHNOLOGY,49(6),3746-3754. |
MLA | Triantafyllidou, Simoni,et al."Low Contribution of PbO2-Coated Lead Service Lines to Water Lead Contamination at the Tap".ENVIRONMENTAL SCIENCE & TECHNOLOGY 49.6(2015):3746-3754. |
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