| 台州电子垃圾拆解区水和沉积物中多溴联苯醚污染特征与生态风险 |
| 摘要点击 2369 全文点击 960 投稿时间：2015-11-10 修订日期：2015-12-15 |
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| 中文关键词 多溴联苯醚 水 沉积物 生态风险 电子垃圾拆解区 |
| 英文关键词 polybrominated diphenyl ethers (PBDEs) water sediment ecological risk e-waste dismantling area |
| 作者 | 单位 | E-mail | | 陈香平 | 温州医科大学环境安全与健康风险评估研究院, 温州 325035
厦门大学环境与生态学院, 近海海洋环境科学国家重点实验室, 厦门 361102 | pxc850222@163.com | | 彭宝琦 | 温州医科大学环境安全与健康风险评估研究院, 温州 325035 | | | 吕素平 | 温州医科大学环境安全与健康风险评估研究院, 温州 325035 | | | 陈强 | 温州医科大学浙南水科学研究院, 温州 325035 | | | 张勇 | 厦门大学环境与生态学院, 近海海洋环境科学国家重点实验室, 厦门 361102
漳州职业技术学院, 漳州 363000 | | | 黄长江 | 温州医科大学环境安全与健康风险评估研究院, 温州 325035 | | | 董巧香 | 温州医科大学环境安全与健康风险评估研究院, 温州 325035 | dqxdong@163.com |
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| 中文摘要 |
| 以台州某电子垃圾拆解工业园为圆心,在半径为16 km的范围内,由近及远设计了C(3 km)、S(5~10 km)和R(10~16 km)三圈共30个采样点,研究了该区域水及沉积物中多溴联苯醚(PBDEs)的污染特征与生态风险.结果表明,水中PBDEs含量为9.4~57.2 ng·L-1,平均值为25.9 ng·L-1; 沉积物中PBDEs含量为3.7~38775 ng·g-1,平均值为2779 ng·g-1; BDE-209均为主要成分.水及沉积物中PBDEs含量的空间分布态势均为:C圈>S圈>R圈,沉积物中PBDEs含量和离工业园区中心的距离呈极显著负相关(P<0.01).与国内外其它地区相比,该调查区PBDEs污染较为严重,电子垃圾拆解是PBDEs污染的主要来源.经推算,该区域近40年的拆卸活动向该地输入的PBDEs总量达30.7 t,其中BDE-209为28.9 t.采用商值法对PBDEs进行初步的生态风险评估表明,拆解核心区(半径为1.5 km)沉积物中五溴联苯醚(Penta-BDEs)的污染程度已达高风险等级,对该地区的生态安全和人群健康可能造成严重影响. |
| 英文摘要 |
| An e-waste dismantling industrial park of Taizhou was selected as the sampling center, within a radius of 16 km, and a total of 30 sampling sites were designed in three circles as follows: C (3 km), S (5-10 km) and R (10-16 km). Pollution characteristics and ecological risk of polybrominated diphenyl ethers (PBDEs) in water and sediments were investigated. The concentrations of PBDEs in water ranged from 9.4 to 57.2 ng·L-1, with a mean value of 25.9 ng·L-1; and 3.7 to 38775 ng·g-1, with an average of 2779 ng·g-1 in sediments. BDE-209 was the predominant congener. The spatial distribution patterns of PBDE levels in water and sediment were both in the following order: C>S>R. Furthermore, the concentrations of PBDEs in sediments showed significant negative correlation against the distance from the industrial park (P<0.01). Compared with other regions around the world, the PBDEs contamination was more serious in the area, which indicated that e-waste dismantling activity was one of the significant sources for PBDEs pollution. It was estimated that a total of 30.7 t PBDEs (including 28.9 t BDE-209) was discharged into surrounding environment as a result of dismantling industrial activities in last 40 years. A preliminary ecological risk assessment for PBDEs in water and sediments was conducted by hazard quotient method. The results demonstrated that the Penta-BDEs in the center of e-waste dismantling area (a radius of 1.5 km) was at particularly high risk level and could cause serious influence on the ecological safety and human health. |
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