Semi-volatile organic compounds in tap water from Hangzhou, China: Influence of pipe material and implication for human exposure.
Semi-volatile organic compounds in tap water from Hangzhou, China: Influence of pipe material and implication for human exposure.
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DOI：
10.1016/j.scitotenv.2019.04.387
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发表时间：
2019-08
期刊：
影响因子：
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通讯作者：
Hangbiao Jin;Wei Dai;Yan Li;X. Hu;Jianqiang Zhu;Pengfei Wu;Wen Wang;Quan Zhang
中科院分区：
文献类型：
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作者：
Hangbiao Jin;Wei Dai;Yan Li;X. Hu;Jianqiang Zhu;Pengfei Wu;Wen Wang;Quan Zhang
近年来，SVOCs的环境行为研究受到了广泛关注。然而，SVOC的发生和管道材料对自来水中SVOC水平的影响很少受到关注。在此，我们收集了自来水样品，从25个家庭，在不同的年龄在杭州，中国。同时测定了这些样品中61种SVOCs的浓度，包括邻苯二甲酸酯（PAEs）、有机氯农药（OCPs）、多环芳烃（PAHs）和多氯联苯（PCBs）。通过危害指数计算评价了潜在的人体接触风险。结果表明，杭州市自来水中SVOCs的总浓度（∑SVOCs）为110 ~ 289 μg/L，平均为179 μg/L，主要成分为多环芳烃（平均为116 ng/L）和邻苯二甲酸酯（平均为55 ng/L）。杭州市自来水中检出12种多氯联苯同系物，其中七氯苯（68%）是检出频率最高的多氯联苯。几乎所有的自来水样品都含有可测的o，p '-DDE、p，p'-DDT和p，p '-DDD，且∑DDTs的浓度显著高于∑HCHs（p< 0.05）。自来水样品中所有目标多环芳烃的检出率均较高（>72%），平均浓度范围为2.1 ~ 41 ng/L。自来水从钢管有相对较低的SVOC浓度比钢筋混凝土，灰铸铁，或球墨铸铁管。虽然没有观察到通过摄入和洗澡接触SVOCs的致癌风险，但钢管自来水的接触风险相对较低。首先，这里提供的数据有助于了解管道材料对人类通过自来水摄入SVOC暴露风险的影响。
Investigations on environmental behaviors of SVOCs have recently received great attention. However, the SVOC occurrence and influence of pipe materials on SVOC levels in the tap water have received little attention. Herein, we collected tap water samples from 25 households constructed at different ages in Hangzhou, China. Concentrations of 61 SVOCs, including phthalate esters (PAEs), organochlorine pesticides (OCPs), polycyclic aromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs), were simultaneously determined in these collected samples. The potential human exposure risks were evaluated via the hazard index calculation. Our results showed that the total concentration of detected SVOCs (∑SVOCs) ranged from 110 to 289 μg/L (mean, 179 μg/L), and the SVOCs were dominated by PAHs (mean, 116 ng/L) and PAEs (mean, 55 ng/L) in Hangzhou tap water. 12 PCB congeners were detected in Hangzhou tap water samples, with hepta-CBs (68% of samples) as the most frequently detected PCBs. Nearly all tap water samples contained measurableo, p’-DDE,p, p’-DDT, andp, p’-DDD, and ∑DDTs had significantly (p< 0.05) higher concentrations than ∑HCHs. All target PAHs had high detection frequencies (>72%) in tap water samples, with their mean concentrations in the range of 2.1–41 ng/L. Tap water from steel pipes had relatively lower SVOC concentrations than that from either reinforced concrete, gray cast iron, or ductile iron pipes. Although no carcinogenic risks originating from exposure to SVOCs through ingestion and bathing were observed, the tap water from steel pipes showed relatively low exposure risks than that from other materials. Data provided here, for the first, are helpful in understanding the influence of pipe materials on human SVOC exposure risks through tap water intake.