苏州河底泥3种内分泌干扰物的空间分布及环境风险  

Spatial Distribution of Three Endocrine Disrupting Chemicals in Sediments of the Suzhou Creek and Their Environmental Risks

作　　者：李洋[1] 胡雪峰[1] 王效举 茂木守 大塚宜寿 细野繁雄 杜艳[1] 姜琪[1] 李珊[1] 冯建伟[1] 

机构地区：[1]上海大学环境与化学工程学院环境科学与工程系,上海200444 [2]日本埼玉县环境科学国际中心

出　　处：《环境科学》2012年第1期239-246,共8页Environmental Science

基　　金：国家自然科学基金项目(40971126;40771093);上海市白玉兰科技人才基金项目;上海市重点学科项目(S30109)

摘　　要：应用气相色谱质谱联用方法对苏州河及其支流底泥中3种环境内分泌干扰物壬基酚(NP)、辛基酚(4-t-OP)和双酚A(BPA)的含量进行检测和调查,结果表明,这3种物质在河流底泥中的浓度变幅分别为<1.0～5 800、<0.10～39和0.90～180μg.kg-1,空间分异显著.总体上看,底泥污染物浓度与河流周边人为活动密集程度有关:在苏州河上海市区段底泥的含量显著地高于上海远郊和江苏省内河段底泥含量;苏州河支流底泥中的含量显著高于苏州河干流底泥含量.苏州河及其支流底泥中这3种内分泌干扰物两两之间,存在显著正相关,说明其有相似的物源.以含量较高的壬基酚为例,进行底泥环境内分泌干扰物的风险评估,结果表明,除苏州河江苏省内吴家港桥段外,其它河段均存在潜在的生态毒害风险,需采取相应的防范措施.Three environmental endocrine disrupting chemicals （EDCs）, named nonylphenol （NP）, octylphenol （4-t-OP） and bisphenol A （BPA）, in sediments of the Suzhou Creek and its branches were detected using gas chromatography-mass spectrometry （GC-MS） method. The results showed that the concentration of three chemicals varied greatly from site to site, which ranged from〈1.0-5800,〈0.10-39 and 0.90-180 μg·kg-1, respectively.In general, the accumulation of pollutants in sediments closely related to the intensity of anthropogenic activities： the concentration of three chemicals in sediments of municipal section of the creek are significantly higher than those in the sections of suburb of Shanghai city and Jiangsu province; the chemical concentrations in sediments of branches are significantly higher than those of the main stream of the creek. Significant correlations between each two of the three chemicals in sediments were observed, implying their similar source provenance. Taking nonylphenol as an example, the environmental risks of the EDCs in sediments were assessed. The result indicated that this chemical in the entire creek except the Wujiagang Bridge point had posed potential toxic risks to ecological system. Therefore, more countermeasures should be taken to prevent EDCs from entering the creek.

关 键 词：苏州河 底泥 内分泌干扰物 壬基酚 辛基酚 双酚A 环境风险 

分 类 号：X131[环境科学与工程—环境科学]