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首页> 外文期刊>Environmental Science and Pollution Research >Polybrominated diphenyl ethers (PBDEs) and heavy metals in road dusts from a plastic waste recycling area in north China: implications for human health
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Polybrominated diphenyl ethers (PBDEs) and heavy metals in road dusts from a plastic waste recycling area in north China: implications for human health

机译：中国北方塑料垃圾回收区道路扬尘中的多溴联苯醚（PBDEs）和重金属：对人类健康的影响

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Road dusts were collected from an area where intense mechanical recycling of plastic wastes occurs in Wen'an, north China. These dusts were investigated for polybrominated diphenyl ethers (PBDEs) and heavy metals contamination to assess the health risk related to these components. Decabromodiphenyl ether (BDE-209) and I 21PBDE pound concentrations in these dusts ranged from 2.67 to 10,424 ng g(-1) and from 3.23 to 10,640 ng g(-1), respectively. These PBDE concentrations were comparable to those observed in road dust from e-waste recycling areas but were 1-2 orders of magnitude higher than concentrations in outdoor or road dusts from other areas. This indicates that road dusts in the study area have high levels of PBDE pollution. BDE-209 was the predominant congener, accounting for 86.3 % of the total PBDE content in dusts. Thus, commercial deca-BDE products were the dominant source. The average concentrations of As, Cd, Cr, Cu, Hg, Pb, Sb, and Zn in these same dust samples were 10.1, 0.495, 112, 54.7, 0.150, 71.8, 10.6, and 186 mg kg(-1), respectively. The geoaccumulation index suggests that road dusts in this area are moderately to heavily polluted with Cd, Hg, and Sb. This study shows that plastic waste processing is a major source of toxic pollutants in road dusts in this area. Although the health risk from exposure to dust PBDEs was low, levels of some heavy metals in this dust exceeded acceptable risk levels for children and are of great concern.
机译：道路灰尘是从华北文安发生大量机械废物塑料回收的地区收集的。对这些粉尘进行了多溴联苯醚（PBDEs）和重金属污染的调查，以评估与这些成分有关的健康风险。这些灰尘中的十溴二苯醚（BDE-209）和I 21PBDE磅浓度分别为2.67至10,424 ng g（-1）和3.23至10,640 ng g（-1）。这些多溴二苯醚的浓度与在电子废物回收区的道路扬尘中观察到的浓度相当，但比其他地区的室外或道路扬尘高1-2个数量级。这表明研究区域的道路粉尘具有较高的多溴二苯醚污染水平。 BDE-209是主要的同源物，占粉尘中多溴二苯醚总含量的86.3％。因此，商用十溴联苯醚产品是主要来源。在这些粉尘样品中，As，Cd，Cr，Cu，Hg，Pb，Sb和Zn的平均浓度分别为10.1、0.495、112、54.7、0.150、71.8、10.6和186 mg kg（-1）。 。地质累积指数表明，该地区的道路扬尘受到Cd，Hg和Sb的中度至重度污染。这项研究表明，塑料垃圾处理是该地区道路灰尘中有毒污染物的主要来源。尽管接触粉尘多溴二苯醚的健康风险较低，但该粉尘中某些重金属的含量超过了儿童可接受的风险水平，因此受到极大关注。

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