Resource Recirculation Research Division, National Institute of Environment Research, Hwangyeong-ro 42, Seo-gu, Incheon - 404-708, Republic of Korea.
Department of Environmental Engineering, Chonbuk National University, 664-14, Dukjin-dong, Dukjin-gu, Jeonju - 561-756, Republic of Korea.
Sci Total Environ. 2014 Feb 1;470-471:1414-21. doi: 10.1016/j.scitotenv.2013.07.129. Epub 2013 Sep 2.
The emission rates of polybrominated diphenyl ethers (PBDEs) from electric/electronic products during their use and disposal were estimated. E-wastes, including televisions and refrigerators, gathered at recycling centers were also analyzed to estimate their emissions. The average concentrations of PBDEs in TV rear covers produced before and after the year 2000 were 145,027 mg/kg and 14,049 mg/kg, respectively. The PBDEs concentration in TV front covers was lower than the concentration in TV rear covers. The concentration in the components of the refrigerator samples ranged from ND to 445 mg/kg. We estimated the atmospheric emissions of PBDEs based on the concentrations. The annual emissions from TV rear covers produced before 2000 were calculated to be approximately 162.1 kg and after 2000, the annual emissions were 18.7 kg. Refrigerators showed the lowest annual emissions of PBDEs (0.7 kg). The atmospheric concentrations were also measured to calculate emissions generated during the recycling process. The highest concentration was 16.86 ng/m(3) emitted from the TV sets during the dismantling process. The concentrations of PBDEs generated in the plastic processing field ranged from 2.05 to 5.43 ng/m(3) depending on the products, and ambient air in open-air yards showed concentrations in the range of 0.32 to 5.55 ng/m(3). Emission factors for the recycling process were calculated using the observed concentrations. The estimated emissions according to the emission factors ranged from 0.3×10(-1) to 90.3 kg/year for open-air yards and from 0.1×10(-1) to 292.7 kg/year for the dismantling and crushing processes of TV set, depending on the production year.
对电器和电子产品在使用和处置过程中多溴二苯醚（PBDEs）的排放率进行了估算。还对回收中心收集的电子废物（包括电视和冰箱）进行了分析，以估算其排放量。2000 年前后生产的电视后壳中 PBDEs 的平均浓度分别为 145027 毫克/千克和 14049 毫克/千克。电视前壳中 PBDEs 的浓度低于电视后壳。冰箱样本部件中的浓度范围为未检出到 445 毫克/千克。我们根据浓度估算了大气中 PBDEs 的排放量。2000 年前生产的电视后壳的年排放量约为 162.1 千克，2000 年后的年排放量为 18.7 千克。冰箱显示出 PBDEs 的最低年排放量（0.7 千克）。还测量了大气浓度以计算回收过程中产生的排放量。从拆解过程中电视发出的浓度最高为 16.86 纳克/立方米。在塑料加工领域产生的 PBDEs 浓度范围为 2.05 至 5.43 纳克/立方米，取决于产品，露天场地的环境空气中浓度范围为 0.32 至 5.55 纳克/立方米。使用观察到的浓度计算了回收过程的排放因子。根据排放因子估算的排放量范围为露天场地的 0.3×10(-1) 至 90.3 千克/年，以及电视拆解和粉碎过程的 0.1×10(-1) 至 292.7 千克/年，这取决于生产年份。
