Brominated flame retardants (BFRs) in indoor and outdoor air in a community in Guangzhou, a megacity of southern China

被引：57
作者：
Ding, Nan [1 ,2 ,3 ]
Wang, Tao [1 ,2 ,3 ]
Chen, She-Jun [1 ,2 ]
Yu, Mei [4 ]
Zhu, Zhi-Cheng [1 ,2 ,3 ]
Tian, Mi [5 ]
Luo, Xiao-Jun [1 ,2 ]
Mai, Bi-Xian [1 ,2 ]
机构：
[1] Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
[2] Chinese Acad Sci, Guangdong Key Lab Environm Protect & Resources Ut, Guangzhou Inst Geochem, Guangzhou 510640, Guangdong, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Guangdong Univ Petrochem Technol, Coll Chem Engn, Maoming 525000, Peoples R China
[5] Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm CAS, Chongqing 400714, Peoples R China
来源：
ENVIRONMENTAL POLLUTION | 2016年 / 212卷
基金：
美国国家科学基金会;
关键词：
Brominated flame retardants (BFRs); Indoor and outdoor air; Source; Seasonal variation; Southern China; POLYBROMINATED DIPHENYL ETHERS; IN-HOUSE DUST; PEARL RIVER DELTA; POLYCHLORINATED-BIPHENYLS; E-WASTE; PBDES; EMISSIONS; CALIBRATION; ENVIRONMENT; ATMOSPHERE;
D O I：
10.1016/j.envpol.2016.02.038
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Indoor environments contribute a significant portion of human exposure to brominated flame retardants (BFRs) because of their extensive use in various household products. This study investigates the occurrence of a number of BFRs in the indoor and outdoor air in a megacity in southern China, in which little information on indoor BFRs contamination is available. The estimated total PBDE concentrations ranged from 1.43 to 57 pg/m(3) indoors and from 1.21 to 1522 pg/m(3) outdoors. The indoor concentrations of lower brominated PBDEs that are mainly derived from the technical penta- and octa-BDE mixtures were higher than or comparable to the outdoors, while the indoor levels of DecaBDEs and decabromodiphenyl ethane (DBDPE) were apparently lower than the outdoors. The seasonal variations of BFR concentrations indicated that evaporation from old indoor products is the primary source of Penta- and OctaBDEs in the air, whereas most DecaBDEs and DBDPE concentrations showing weak temperature-dependence are largely released from industrial activities. The PBDE congener profiles in the air were generally similar, which were dominated by BDE209, 28, and 47; whereas the appreciable indoor outdoor differences in the compositions are possibly due to emission sources, photochemical degradation, or congener-specific transport of BFRs in the indoor and outdoor air. Significant correlations between the indoor and outdoor BFRs were observed suggesting the exchange of BFRs between the two compartments, which are more noticeable for PentaBDEs and DecaBDEs with strong indoor and outdoor emission sources, respectively. This study provides significant insights into the sources of BFRs in urban air in China. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：457 / 463
页数：7
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