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首页> 外文期刊>Journal of soil & sediments >Accumulation of PAHs of the soils and assessment of their health risks at a village with plastic manufacturing in Taizhou, Zhejiang Province, Southeast China
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Accumulation of PAHs of the soils and assessment of their health risks at a village with plastic manufacturing in Taizhou, Zhejiang Province, Southeast China

机译：中国东南部浙江省台州市一个塑料制造村的土壤中PAHs的积累及其健康风险评估

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Purpose Accumulation of polycyclic aromatic hydrocarbons (PAHs) in soil had drawn increasing attention for their potential toxic effects on human health and ecological system. This work tried to probe into a possible link between the accumulation of PAHs in soil and a high incident of cancer at a plastic-manufacturing village in Taizhou, Zhejiang Province, Southeast China. Materials and methods Eight soil samples were collected nearby two plastic-processing plants at the village. The samples were air dried and stored at 4 degrees C for chemical analyses. Sixteen monomers of PAHs in the samples, listed as the precedently controlled pollutants by the US Environmental Protection Agency (USEPA), were analyzed using the gas chromatography-mass spectrometry. A model of incremental lifetime cancer risks (ILCRs) specified by USEPA were used to assess their health risks. Results and discussion The total concentrations of precedent-controlled 16 PAHs in the soils are in a range of 2.3-366.4 ng g(-1), with an average of 129.03 ng g(-1). Those of seven carcinogenic PAHs are in a range of 0-123.9 ng g(-1), with 58.46 ng g(-1) on average. The concentrations of PAHs in the soils were much higher nearby the plastic-processing plants. The ILCRs of adults and children who are exposed to PAHs in the soil through oral intake and skin touch are in a range of 10(-8) ~ 10(-5). Conclusions The soils nearby the plastic-processing plants have higher contents of PAHs. The PAHs are dominated by middle- and higher-ring monomers, suggesting the origin of high-temperature combustion. The ratios of specific monomers also indicated that PAHs in the soils mostly originate from plastic manufacturing. A cancer risk of adults from PAH exposure in the soil through oral intake and skin touch attains a potential level. That of children can never be ignored. It proves that a high incidence of cancer in the study areas is correlated with the industrial emissions of PAHs from the plastic plants.
机译：目的土壤中多环芳烃（PAHs）的积累因其对人体健康和生态系统的潜在毒性作用而引起了越来越多的关注。这项工作试图探讨在中国东南部浙江省台州市的一个塑料制造村中土壤中PAHs的积累与癌症高发之间的可能联系。材料和方法在该村庄的两个塑料加工厂附近收集了八个土壤样品。将样品风干并储存在4摄氏度下进行化学分析。使用气相色谱-质谱法分析了样品中的16种PAHs单体（被美国环境保护局（USEPA）列为优先控制的污染物）。美国环保局指定的终生终生癌症风险（ILCR）模型用于评估其健康风险。结果与讨论土壤中受先例控制的16种PAHs的总浓度在2.3-366.4 ng g（-1）范围内，平均为129.03 ng g（-1）。七个致癌PAH的含量范围为0-123.9 ng g（-1），平均为58.46 ng g（-1）。在塑料加工厂附近，土壤中PAHs的浓度要高得多。通过口服摄入和皮肤接触土壤中暴露于多环芳烃的成人和儿童的ILCR范围为10（-8）〜10（-5）。结论塑料加工工厂附近的土壤中PAHs含量较高。多环芳烃主要由中环和高环单体组成，这表明高温燃烧的起源。特定单体的比例还表明，土壤中的PAHs主要来自塑料制造。通过口服摄入和皮肤接触土壤中的PAH暴露，成人患癌症的风险达到了潜在水平。永远不要忽视儿童的利益。事实证明，研究区癌症的高发与塑料厂中PAHs的工业排放有关。

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