| 崔阳,郭利利,张桂香,李宏艳,何秋生.山西焦化污染区土壤和农产品中PAHs风险特征初步研究[J].农业环境科学学报,2015,34(1):72-79. |
| 山西焦化污染区土壤和农产品中PAHs风险特征初步研究 |
| Human Health Risks of PAHs in Soils and Agricultural Products in Coking Areas, Shanxi Province, China |
| 投稿时间：2014-07-26 |
| DOI：10.11654/jaes.2015.01.011 |
| 中文关键词: 焦化区土壤 农产品 多环芳烃 风险评价 |
| 英文关键词: coking area agricultural product PAHs health risk |
| 基金项目:国家自然科学基金面上项目(41172316);教育部重点项目(211026);山西省科技研究基金项目(2011021025-2);山西省筹资助回国留学人员科研项目(2011080) |
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| 中文摘要: |
| 为对区域土壤环境质量评价和农产品的安全生产提供数据支持和试验方法参考,分析了山西省焦化污染区孝义、汾阳、柳林等地农田土壤和农产品样品中16种优控多环芳烃(PAHs)含量,并探讨了PAHs的污染特征和潜在的健康风险.结果表明:农田表层土壤和农产品中总PAHs(∑16-PAHs)浓度水平范围分别为171.67~3 176.79 μg·kg-1和59.53~1 054.99 μg·kg-1,在国内分别处于较高和中等污染水平.土壤和农产品中均是2~4环PAHs含量高而5~6环PAHs含量低.PAHs在农产品中的富集趋势为叶菜类 > 根茎类 > 果实类.通过风险评价发现部分土壤和农产品超过相应的标准,存在一定的潜在风险.通过比值法结合采样点位置推断焦化厂产生的焦油和荒煤气是农田表层土壤中PAHs的重要来源,应当引起重视. |
| 英文摘要: |
| Polycyclic aromatic hydrocarbons(PAH) pollution has often been reported in surrounding coking areas. In this study, sixteen priority PAHs and their potential health risks were investigated in farmland soils and agricultural products from coking areas in Xiaoyi, Fenyang and Liulin, Shanxi Province. The results revealed that the Σ16-PAHs levels in the topsoil samples and agricultural products were respectively 171.67~3 176.79 μg·kg-1 and 59.53~1 054.99 μg·kg-1, which were at high and moderate levels compared to those in other areas in China. Most of PAHs in both soils and agricultural products contained 2~4 aromatic rings, while a few with 5~6 rings. The enrichment of PAHs in agricultural products was in order of leafy vegetables > root vegetables > fruit vegetables. Based on the risk assessment model, the concentrations of PAHs in some soils and agricultural products exceeded the quality standards, implying potential risks to human health. Based on the ratios and the location of industries around the sampling sites, the emission of cooking gas and leak of coal tar were identified as the important sources of PAHs in topsoils. These findings would provide useful information for the environmental quality assessment of the regional soils and the safe production of agricultural products. |
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