对河北某典型废旧塑料处置地土壤中邻苯二甲酸酯污染水平及分布特征进行了研究.结果表明,废旧塑料处置地土壤中∑16PAEs含量0.517-30.1μg·g-1,平均为6.98μg· g-1,与电子垃圾处理地土壤PAEs含量处于同一个数量级,高出一般土壤l-2个数量级.邻苯二甲酸二(2-乙基)己酯(DEHP),邻苯二甲酸二异丁酯(DIBP)和邻苯二甲酸二丁酯(DBP)为PAEs污染的主要同系物,其中DEHP对总量贡献率最大,平均为68.8％.废旧塑料回收利用过程中的污染排放是该研究区土壤中PAEs的主要来源.对美国EPA和欧盟优先控制的6种PAEs(邻苯二甲酸二甲酯、邻苯二甲酸二乙酯、邻苯二甲酸二丁酯、邻苯二甲酸丁基苄基酯、邻苯二甲酸二(2-乙基)己酯、邻苯二甲酸二正辛酯)同系物进行了风险评价,结果表明成人和儿童对DEHP暴露的致癌风险超出了可接受水平.废旧塑料处置地土壤的PAEs污染应引起高度重视.
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