Atmospheric concentrations of polybrominated diphenyl ethers at near-source sites
Atmospheric concentrations of polybrominated diphenyl ethers at near-source sites
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DOI：
10.1021/es070844j
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发表时间：
2007-09-15
影响因子：
11.4
通讯作者：
Baker, Lynton
中科院分区：
文献类型：
--
作者：
Cahill, Thomas M.;Groskova, Danka;Baker, Lynton
在可疑来源附近的空气样本中测定了多溴联苯醚（PBDEs）的浓度，这些可疑来源包括室内计算机实验室、室内和室外电子回收设施以及室外汽车粉碎和金属回收设施。结果表明：(1)计算机实验室中的PBDE浓度在计算机打开时高于关闭时，(2)电子回收设施的室内浓度高达65万pg/m(3)，十溴联苯醚（PBDE 209）的浓度高达1900 pg/m(3)在汽车粉碎/金属回收设施的下风围线上。所有地点的吸入暴露估计通常低于110 pg/kg/天，但电子粉碎设备附近的室内空气样本的暴露估计高于40000 pg/kg/天。尽管在三个源地点的吸入暴露量升高，但根据综合风险信息系统（IRIS）中目前的最低参考剂量（RfD），预计暴露不会对健康造成不利影响，尽管这些RfD值目前正在由美国环境保护局重新评估。需要对多溴二苯醚的潜在健康影响进行更多的研究。
Concentrations of polybrominated diphenyl ethers (PBDEs) were determined in air samples from near suspected sources, namely an indoors computer laboratory, indoors and outdoors at an electronics recycling facility, and outdoors at an automotive shredding and metal recycling facility. The results showed that (1) PBDE concentrations in the computer laboratory were higher with computers on compared with the computers off, (2) indoor concentrations at an electronics recycling facility were as high as 650 000 pg/m(3) for decabromodiphenyl ether (PBDE 209), and (3) PBDE 209 concentrations were up to 1900 pg/m(3) at the downwind fenceline at an automotive shredding/metal recycling facility. The inhalation exposure estimates for all the sites were typically below 110 pg/kg/day with the exception of the indoor air samples adjacent to the electronics shredding equipment, which gave exposure estimates upward of 40 000 pg/kg/day. Although there were elevated inhalation exposures at the three source sites, the exposure was not expected to cause adverse health effects based on the lowest reference dose (RfD) currently in the Integrated Risk Information System (IRIS), although these RfD values are currently being re-evaluated by the U.S. Environmental Protection Agency. More research is needed on the potential health effects of PBDEs.