电子垃圾处理地土壤中芳烃受体效应物质的分布规律  

Distribution of Ah-receptor agonists in soils contaminated by electronic waste recycling

作　　者：杨蕾[1] 骆坚平[1] 王春霞[1] 黄圣彪[1] 王子健[1] 

机构地区：[1]中国科学院生态环境研究中心,环境水质学国家重点实验室,北京100085

出　　处：《环境科学学报》2008年第6期1131-1135,共5页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.40590390);国家重点基础研究发展计划(No.2003CB415005)~~

摘　　要：利用大鼠肝癌细胞H4IIE离体生物测试(EROD测试)评估了位于我国南方的典型电子垃圾处理地(某镇)三个自然村共23个土壤样品有机提取物的芳烃受体效应,并研究了这些地区土壤中芳烃受体效应物质的污染水平和空间分布规律.结果表明,在所研究地区中,塑料回收村芳烃受体效应最高,其次是电路板回收村和电器拆解村.与文献数据相比,该镇土壤有机组分的芳烃受体效应较传统工业城市天津的污染土壤高,且空间分布规律与该镇电子垃圾处理业的区域分工在某种程度上有密切关系.研究结果表明,粗放型的电子垃圾处理手段导致了芳烃受体效应物质在该镇土壤环境中的积累,且离体生物效应标记方法可用来快速筛选和甄别芳烃受体效应物质污染的高风险区.A total of 23 surface soil organic extracts from three villages in an electronic waste （e-waste） recycling center （one town） in southern China were assayed using the ethoxyresorfin O-deethylase （EROD） bioassay to assess the levels and spatial distribution of Ah-receptor agonists. The highest levels of Ah-agonists were observed in the village for plastic recovery, followed by the villages for circuit board recovery and equipment dismantling. In comparison with previous data in literature, concentrations of Ah-receptor agonlsts in soils in the typical e-waste recycling center were higher than contaminated soils in Tianjin, where traditional industry is dominant. The great variance in spatial distribution of dioxin-like chemicals might be related to the industrial division of the local e-waste recycling business. Primitive e-waste recycling activities result in the accumulation of Ah-receptor agonists in soils, and the EROD bioassay could be a useful alternative method for screening and evaluation of risks on a regional scale.

关 键 词：电子垃圾 土壤 芳烃受体物质 空间分布 EROD测试 

分 类 号：X53[环境科学与工程—环境工程]