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首页> 外文期刊>Environmental Science & Technology >Childhood Lead Exposure in an Industrial Town in China: Coupling Stable Isotope Ratios with Bioaccessible Lead
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Childhood Lead Exposure in an Industrial Town in China: Coupling Stable Isotope Ratios with Bioaccessible Lead

机译：中国工业城镇的儿童铅暴露：稳定的同位素比与可生物利用的铅耦合

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摘要

Fingerprinting based on stable isotopes of lead (Pb) in blood and environmental media helps to identify Pb exposure pathways in children. However, previous studies used stable isotopes of total Pb in media. In this study, a wire rope production town in China (Zhuhang) was selected for investigating the effectiveness of using isotope ratios in bioaccessible Pb to identify childhood Pb exposure pathways. Blood Pb levels of 115 children in Zhuhang were 1.7-20.4 μg dL~(-1), averaging 6.1± 3.2 μg dL~(-1) (mean ± standard deviation), and were ～1.6 times the national average in China (3.9 ± 1.8 μg dL~(-1)). Among different environmental media (housedust, soil, PM_(10), vegetables, rice, and drinking water), housedust (695 ± 495 mg kg~(-1)) and vegetables [0.36 ± 0.40 mg (kg of fresh weight)~(-1)] contained elevated Pb concentrations. The isotope ratios (~(207)Pb/~(206)Pb and ~(208)Pb/~(206)Pb) of total Pb were the highest in housedust (0.8587 ± 0.0039 and 2.1049 ± 0.0087) but lower than blood Pb ratios (0.8634 ± 0.0027 and 2.1244 ± 0.0061). When using bioaccessible Pb in housedust (0.8639 ± 0.0018 and 2.1171 ± 0.0036), the isotope ratios overlapped with blood Pb ratios, suggesting that incidental ingestion of housedust was the predominant contributor to children's blood Pb. Coupling the stable isotope technique with bioaccessible Pb is more reliable for identifying Pb exposure pathways than total Pb determinations.
机译：基于血液和环境介质中铅（Pb）的稳定同位素进行的指纹识别有助于确定儿童中铅的暴露途径。但是，以前的研究使用了介质中总Pb的稳定同位素。在这项研究中，我们选择了中国（诸行）的一个钢丝绳生产镇，以研究利用可生物利用的铅中的同位素比率来确定儿童期铅暴露途径的有效性。杭州市115名儿童的血铅水平为1.7-20.4μgdL〜（-1），平均为6.1±3.2μgdL〜（-1）（平均值±标准差），是全国平均水平（3.9）的1.6倍。 ±1.8μgdL〜（-1））。在不同的环境介质（木屑，土壤，PM_（10），蔬菜，大米和饮用水），木屑（695±495 mg kg〜（-1））和蔬菜[0.36±0.40 mg（鲜重kg）〜 （-1）]的Pb浓度升高。总铅的同位素比（〜（207）Pb /〜（206）Pb和〜（208）Pb /〜（206）Pb）在木屑中最高（0.8587±0.0039和2.1049±0.0087），但低于血液Pb比率（0.8634±0.0027和2.1244±0.0061）。当在屋尘中使用可生物接触的铅（0.8639±0.0018和2.1171±0.0036）时，同位素比率与血铅比率重叠，这表明意外摄入屋尘是儿童血液铅的主要来源。稳定同位素技术与生物可及的铅的耦合比确定总铅的方法更可靠地确定铅的暴露途径。

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  • 来源
    《Environmental Science & Technology》 |2015年第8期|5080-5087|共8页
  • 作者

    Hong-Bo Li; Kai Chen; Albert L. Juhasz; Lei Huang; Lena Q Ma;

  • 作者单位

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, People's Republic of China;

    Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, South Australia 5095, Australia;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, People's Republic of China;

    State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, People's Republic of China,Soil and Water Science Department, University of Florida, Gainesville, Florida 32611, 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);
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