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Residential Tap Water Contamination Following the Freedom Industries Chemical Spill: Perceptions, Water Quality, and Health Impacts

机译:自由工业发生化学泄漏后的居民自来水污染:感知,水质和健康影响

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摘要

During January 2014, an industrial solvent contaminated West Virginia's Elk River and 15% of the state population's tap water. A rapid in-home survey and water testing was conducted 2 weeks following the spill to understand resident perceptions, tap water chemical levels, and premise plumbing flushing effectiveness. Water odors were detected in all 10 homes sampled before and after premise plumbing flushing. Survey and medical data indicated flushing caused adverse health impacts. Bench-scale experiments and physiochemical property predictions showed flushing promoted chemical volatilization, and contaminants did not appreciably sorb into cross-linked polyethylene (PEX) pipe. Flushing reduced tap water 4-methylcyclohexane-methanol (4-MCHM) concentrations within some but not all homes. 4-MCHM was detected at unflushed (<10 to 420 μg/L) and flushed plumbing systems (<10 to 96 μg/L) and sometimes concentrations differed among faucets within each home. All waters contained less 4-MCHM than the 1000 μg/L Centers for Disease Control drinking water limit, but one home exceeded the 120 μg/L drinking water limit established by independent toxicologists. Nearly all households refused to resume water use activities after flushing because of water safety concerns. Science based flushing protocols should be developed to expedite recovery, minimize health impacts, and reduce concentrations in homes when future events occur.
机译:2014年1月,工业溶剂污染了西弗吉尼亚州的麋鹿河和该州15%的自来水。泄漏发生后2周,进行了快速的家庭调查和水质测试,以了解居民的看法,自来水化学物质水平和房屋水管冲洗效果。在进行自来水管道冲洗之前和之后,在所有10个采样的房屋中检测到水味。调查和医学数据表明,潮红会对健康产生不利影响。基准规模的实验和理化性质预测表明,潮红促进了化学挥发,并且污染物并未明显吸收到交联聚乙烯(PEX)管中。冲洗部分(但不是全部)房屋中的自来水会降低4-甲基环己烷-甲醇(4-MCHM)的浓度。在未冲洗(<10至420μg/ L)和冲洗管道系统(<10至96μg/ L)中检测到4-MCHM,有时每个家庭的水龙头间浓度不同。所有水中所含的4-MCHM均低于1000μg/ L疾病控制中心饮用水限制,但一所房屋超过了独立毒理学家确定的120μg/ L饮用水限制。由于水安全问题,几乎所有家庭在冲水后都拒绝恢复用水活动。应制定基于科学的冲洗规程,以加快恢复速度,最大程度地降低健康影响,并在将来发生事件时降低房屋的集中度。

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  • 来源
    《Environmental Science & Technology》 |2015年第2期|813-823|共11页
  • 作者单位

    Division of Environmental and Ecological Engineering and Lyles School of Civil Engineering, Purdue University, West Lafayette, Indiana 47907, United States;

    Department of Civil Engineering, University of South Alabama, Mobile, Alabama 36688, United States;

    Department of Civil Engineering, University of South Alabama, Mobile, Alabama 36688, United States;

    Department of Civil Engineering, University of South Alabama, Mobile, Alabama 36688, United States;

    Department of Civil Engineering, University of South Alabama, Mobile, Alabama 36688, United States;

    Department of Civil Engineering, University of South Alabama, Mobile, Alabama 36688, United States;

    Kanawha Charleston Health Department, Charleston, West Virginia 25301, United States;

    Department of Mathematics and Statistics, University of South Alabama, Mobile, Alabama 36688, United States;

    Department of Civil Engineering, University of South Alabama, Mobile, Alabama 36688, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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