Chen Xuan-Yu, Xue Nan-Dong, Zhang Shi-Lei, Li Fa-Sheng, Gong Dao-Xin, Liu Bo, Meng Lei
Huan Jing Ke Xue. 2014 Oct;35(10):3731-9.
Polybrominated diphenyl ethers (PBDEs) were determined in sediments collected from a river which through an electrical equipment dismantling area. The results showed that concentrations of PBDEs ranged from 101 to 20,400 ng · g(-1) with an average of 3,700 ng · g(-1), and BDE209 was the most dominant homologue accounted for more than 94% of all detected homologues. The concentration of PBDEs was higher in the middle of river than that in upstream and downstream and the average concentration in downstream was higher than the upstream, with a peak of concentration in the area near by dismantling industrial park. PBDEs pollution in this region is relatively serious compared with other regions. It was estimated that 0.39 t PBDEs (including 0.36 t BDE209) was discharged into the river as a result of dismantling industrial activities in last 40 years. A preliminary ecological risk assessment for PBDEs in sediments was conducted by hazard quotient method, the results showed that the OctaBDEs and DecaBDEs were in a low ecological risk, while the PentaBDEs was in a particularly high risk and could cause great harm to the environment.
对一条流经电子设备拆解区域的河流采集的沉积物中的多溴二苯醚（PBDEs）进行了测定。结果表明，PBDEs浓度范围为101至20400 ng·g⁻¹，平均为3700 ng·g⁻¹，且BDE209是最主要的同系物，占所有检测到的同系物的94%以上。河流中游的PBDEs浓度高于上游和下游，下游的平均浓度高于上游，在拆解工业园区附近区域出现浓度峰值。与其他地区相比，该区域的PBDEs污染相对严重。据估计，过去40年的拆解工业活动导致0.39吨PBDEs（包括0.36吨BDE209）排入该河流。采用风险商数法对沉积物中的PBDEs进行了初步生态风险评估，结果表明八溴二苯醚和十溴二苯醚处于低生态风险水平，而五溴二苯醚处于特别高的风险水平，可能对环境造成极大危害。
