Occurrence of polybrominated diphenyl ethers in indoor air and dust in Hangzhou, China: Level, role of electric appliances, and human exposure.
Occurrence of polybrominated diphenyl ethers in indoor air and dust in Hangzhou, China: Level, role of electric appliances, and human exposure.
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DOI：
10.1016/j.envpol.2016.08.042
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发表时间：
2016-11
影响因子：
8.9
通讯作者：
Jianqiang Sun;Qianwen Wang;Shulin Zhuang;Anping Zhang
中科院分区：
文献类型：
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作者：
Jianqiang Sun;Qianwen Wang;Shulin Zhuang;Anping Zhang
本研究调查了8种多溴联苯醚（PBDE）同系物在家庭（n = 20）、办公室（n = 20）、空调（n = 6）和电脑（n = 6）中的存在情况。大多数同系物的检出频率都很高，表明五溴二苯醚、八溴二苯醚和十溴二苯醚混合物的使用仍在继续。家庭空气和办公室空气中∑ PBDEs的中位浓度分别为119和194皮克m − 3。关于灰尘，家庭和办公室灰尘中∑ PBDEs的中位浓度分别为239和437 ng g − 1。家庭灰尘和办公室灰尘中BDE-209与多溴二苯醚∑的中位浓度比率分别约为0.95和0.87。空调过滤器和电脑后箱灰尘中∑ PBDEs的中位浓度分别为359 ng g − 1和350 ng g − 1。空调和电脑样本中BDE-209与∑ PBDEs的中位浓度比值约为0.58和0.46。运行空调通过直接和间接途径增加了办公室空气中的多溴二苯醚。据估计，在家中蹒跚学步的幼儿每天摄入的多溴二苯醚为2，630皮克（千克体重）-1天-1，在家中和办公室的成人每天摄入的多溴二苯醚为319皮克（千克体重）-1天-1。
This study investigated the occurrence of 8 polybrominated diphenyl ether (PBDE) congeners from homes (n = 20), offices (n = 20), air conditioners (n = 6), and computers (n = 6). High detection frequencies for most of the congeners were observed, indicating continued widespread use of Penta-, Octa- and Deca-BDE mixtures. The median concentrations of ∑PBDEs were 119 and 194 pg m−3for home air and office air, respectively. Regarding dust, the median concentrations of ∑PBDEs were 239 and 437 ng g−1for home and office dust, respectively. The ratios of the median concentrations of BDE-209 to ∑PBDEs were approximately 0.95 and 0.87 for home dust and office dust, respectively. The median concentrations of ∑PBDEs were 359 ng g−1and 350 ng g−1for dust on air conditioner filters and the back cabinet of the computer, respectively. The ratios of the median concentrations of BDE-209 to ∑PBDEs were approximately 0.58 and 0.46 for air conditioner and computer samples. Running air conditioners contributed to ΣPBDEs in office air through direct and indirect pathways. The daily intake of PBDEs was estimated to be 2630 pg (kg bw)−1day−1for toddlers in homes and 319 pg (kg bw)−1day−1for adults in homes and offices.