Heavy metals in human urine, foods and drinking water from an e-waste dismantling area: Identification of exposure sources and metal-induced health risk.
Heavy metals in human urine, foods and drinking water from an e-waste dismantling area: Identification of exposure sources and metal-induced health risk.
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DOI：
10.1016/j.ecoenv.2018.10.039
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发表时间：
2019-03
影响因子：
6.8
通讯作者：
Tao Zhang;Jujun Ruan;Bo Zhang;Shaoyou Lu;Chuanzi Gao;Lifei Huang;Xue-yuan Bai;Lei Xie;M. G
中科院分区：
文献类型：
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作者：
Tao Zhang;Jujun Ruan;Bo Zhang;Shaoyou Lu;Chuanzi Gao;Lifei Huang;Xue-yuan Bai;Lei Xie;M. G
众所周知，电子废物或电子废物拆解活动会释放金属。然而，人类接触金属的途径及其与电子废物拆解区（EDA）氧化应激的关系仍不清楚。在这项研究中，我们的结果显示，蔬菜（Cd 0.096 和 Pb 0.35 µg/g fw）、大米（Cd 0.15、Pb 0.20 和 12.3 µg/g fw）、鸡蛋（Cd 0.006 和 Pb 0.071 µg/g fw）和人尿液（Cd 2.12、Pb）中的几何平均浓度升高。 4.98、铜 22.2 和锑 0.20 ng/mL）。我们的计算表明，生活在 EDA 的儿童和成人中，大米消费来源占镉 (61-64%)、铜 (85-89%) 和锌 (75-80%) 每日摄入量 (DI) 的绝大多数；蔬菜是 Cd DI 的主要贡献者 (30-32%)；大米（20-29%）、蔬菜（28-38%）和灰尘摄入（26-45%）都是Pb的重要暴露源。风险评估预测，通过食物摄入摄入的镉、铅、铜和锌会对 EDA 当地居民造成健康风险，并且分析的金属的尿浓度与人类氧化应激生物标志物 8-OHdG 升高显着相关（皮尔逊相关系数：r=0.324–0.710；p<0.01）。
Electronic waste or e-waste dismantling activities are known to release metals. However, the human exposure pathways of metals, and their association with oxidative stress in e-waste dismantling areas (EDAs) remain unclear. In this study, our results revealed elevated geometric mean concentrations in vegetables (Cd 0.096 and Pb 0.35 µg/g fw), rice (Cd 0.15, Pb 0.20, and 12.3 µg/g fw), hen eggs (Cd 0.006 and Pb 0.071 µg/g fw), and human urine (Cd 2.12, Pb 4.98, Cu 22.2, and Sb 0.20 ng/mL). Our calculations indicate that rice consumption source accounted for the overwhelming proportion of daily intakes (DIs) of Cd (61–64%), Cu (85–89%), and Zn (75–80%) in children and adults living in EDA; vegetables were the primary contributors to the DIs of Cd (30–32%); and rice (20–29%), vegetables (28–38%), and dust ingestion (26–45%) were all important exposure sources of Pb. Risk assessment predicted that DIs of Cd, Pb, Cu, and Zn via food consumption poses health risks to local residents of EDAs, and the urinary concentrations of analyzed metals were significantly (Pearson correlation coefficient:r= 0.324–0.710; p < 0.01) associated with elevated 8-OHdG, a biomarker of oxidative stress in humans.