Xue Nan-Dong, Chen Xuan-Yu, Yang Bing, Qin Pu-Feng, Long Yu
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Hunan Research Academy of Environmental Sciences, Changsha 410007, China.
Huan Jing Ke Xue. 2016 Nov 8;37(11):4326-4332. doi: 10.13227/j.hjkx.201604160.
The multimedia fugacity model (Ⅲ) was used to simulate the distribution, transfer and fate of typical polybrominated diphenyl ethers (PBDEs) in air, water, soil and sediment in an electrical equipment dismantling area in eastern China. The modeling data were compared with monitored values in air, soil and sediment for validation purpose. Moreover, the transfer fluxes between different compartments were analyzed in order to infer the main transfer process. Parameters of the model were tested and the key parameters were identified using sensitivity analysis method for BDE47 and BDE209.The results of sensitivity analysis indicated that vapor pressure, the lg value and half-life had significant influence on concentrations of PBDEs in different media. The results showed that when the system reached equilibrium, most of the PBDEs would be accumulated in soil and sediment. The air advection outflow and soil degradation were the major routes for PBDEs to disappear in the area. The results will provide the basis for the risk management of PBDEs contamination.
利用多媒体逸度模型（Ⅲ）模拟典型多溴二苯醚（PBDEs）在中国东部某电子设备拆解区空气、水、土壤和沉积物中的分布、迁移及归趋。将模拟数据与空气、土壤和沉积物中的监测值进行比较以作验证。此外，分析不同介质间的迁移通量以推断主要迁移过程。对模型参数进行测试，并采用灵敏度分析方法确定BDE47和BDE209的关键参数。灵敏度分析结果表明，蒸气压、lg值和半衰期对不同介质中PBDEs的浓度有显著影响。结果显示，当系统达到平衡时，大部分PBDEs将累积在土壤和沉积物中。空气平流流出和土壤降解是该区域PBDEs消失的主要途径。研究结果将为PBDEs污染的风险管理提供依据。
