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首页> 外文期刊>Environmental Science & Technology >Partitioning Behavior of Heavy Metals and Persistent Organic Pollutants among Feto-Maternal Bloods and Tissues
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Partitioning Behavior of Heavy Metals and Persistent Organic Pollutants among Feto-Maternal Bloods and Tissues

机译：胎儿母体血液和组织中重金属和持久性有机污染物的分配行为

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摘要

Heavy metals and persistent organic pollutants (POPs), including Pb, Cd, T-Hg, MeHg, PCDD/Fs, PCBs, PBDEs, PCNs, and PBDD/Fs, were analyzed in 20 paired samples of cord blood, maternal blood, maternal urine, and placenta. The samples were collected from pregnant mothers and neonates from South Korea in 2010. The distribution of heavy metals among the samples varied with their physicochemical characteristics. The concentrations of Pb and Hg in the maternal and the cord blood samples were significantly correlated each other, implying efficient transplacental transport (TPT). Cd and Hg were accumulated in the placenta, forming protein conjugates, and T-Hg was higher in the cord blood samples than the maternal blood samples due to the binding affinity of Hg with fetal proteins. POPs generally showed the highest concentrations in the maternal serum samples, and the POPs levels in the cord serum and the placenta samples were dependent on the degree of halogenation. The TPT of POPs was seemingly related to lipoprotein transportation. Some PBDE congeners, however, showed their highest concentrations in the cord serum samples, suggesting an additional TPT mechanism. This is the first study to detect PCNs and PBDD/Fs in the cord serum samples, showing that the PCN levels were comparable to other POPs. According to the principal component analysis (PCA) results of the contaminant levels, POPs and heavy metals showed significantly different characteristics, whereas PBDEs had an intermediate attribute. Despite the limited number of participants, the comprehensive analysis of trace contaminants in the paired sample sets enabled us to infer the distribution and TPT mechanism of various contaminants.
机译：在20对成对的脐带血，母体血液，母体样本中分析了重金属和持久性有机污染物（POPs），包括Pb，Cd，T-Hg，MeHg，PCDD / Fs，PCBs，PBDEs，PCNs和PBDD / Fs。尿液和胎盘。样品于2010年从韩国的孕妇和新生儿中采集。样品中重金属的分布随其理化特性而变化。母体和脐带血样本中的Pb和Hg浓度彼此显着相关，这意味着有效的胎盘转运（TPT）。 Cd和Hg积聚在胎盘中，形成蛋白质结合物，由于Hg与胎儿蛋白的结合亲和力，脐带血样品中的T-Hg高于母体血液样品。 POP通常在母体血清样品中显示最高浓度，而脐带血清和胎盘样品中的POPs水平则取决于卤化程度。 POPs的TPT似乎与脂蛋白运输有关。但是，某些多溴二苯醚同系物在脐带血清样品中显示出最高的浓度，这表明存在另一种TPT机制。这是第一项检测脐带血清样品中PCN和PBDD / F的研究，表明PCN水平可与其他POP媲美。根据污染物水平的主成分分析（PCA）结果，POPs和重金属表现出明显不同的特征，而PBDEs具有中间属性。尽管参与者数量有限，但对配对样品集中的痕量污染物的全面分析使我们能够推断出各种污染物的分布和TPT机制。

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  • 来源
    《Environmental Science & Technology》 |2015年第12期|7411-7422|共12页
  • 作者

    Jun-Tae Kim; Min-Hui Son; Duk-Hee Lee; Won Joon Seong; Seunghee Han; Yoon-Seok Chang;

  • 作者单位

    School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea;

    School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea;

    School of Medicine, Kyungpook National University, Daegu, 790-842, Republic of Korea;

    School of Medicine, Kyungpook National University, Daegu, 790-842, Republic of Korea;

    School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 500-712, Republic of Korea;

    School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea;

  • 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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