描述办公环境中多溴二苯醚 (PBDEs) 的分布、来源和潜在健康风险。
Characterizing distribution, sources, and potential health risk of polybrominated diphenyl ethers (PBDEs) in office environment.
机构信息
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
出版信息
Environ Pollut. 2015 Mar;198:25-31. doi: 10.1016/j.envpol.2014.12.024. Epub 2014 Dec 27.
This study evaluated the levels and spatial distribution of PBDEs in 9 typical offices in Shanghai, China through the sample analysis of air and settled dust (floor dust, desktop dust and dust in computer case). PBDEs in air ranged from 93 to 322 pg/m(3), while the PBDEs levels in dust varied from 247 to 3.3 × 10(4) ng/g. Spatial variability of PBDEs in office dust was evident and likely influenced by air exchange and the use of electronic devices. A significant positive linear correlation was observed between the power usage rate and PBDE levels in both office air (R(2) = 0.81) and settled dust (R(2) = 0.94). The PBDEs exposure via inhalation and dust ingestion were both analyzed to estimate the life-time cancer risk, which is 1.34 × 10(-22) to 7.16 × 10(-22), significantly lower than the threshold level (10(-6)). Non-cancer risk indicated by the hazard index (<1) is also low in current exposure conditions.
本研究通过对上海 9 个典型办公室的空气和沉降尘（地板尘、桌面尘和电脑机箱内的灰尘）样本分析，评估了多溴二苯醚（PBDEs）的水平和空间分布。空气中的 PBDEs 浓度范围为 93 至 322 pg/m(3)，而灰尘中的 PBDEs 浓度范围为 247 至 3.3 × 10(4)ng/g。办公室灰尘中 PBDEs 的空间变异性明显，可能受到空气交换和电子设备使用的影响。在办公空气（R(2) = 0.81）和沉降尘（R(2) = 0.94）中，均观察到用电量与 PBDEs 水平之间存在显著的正线性相关。通过吸入和灰尘摄入两种途径进行 PBDEs 暴露分析，以评估终生癌症风险，其值为 1.34×10(-22)至 7.16×10(-22)，远低于阈值水平（10(-6)）。在当前暴露条件下，危害指数（<1）表示的非癌症风险也较低。
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