External Exposure to Short- and Medium-Chain Chlorinated Paraffins for the General Population in Beijing, China

被引:102
|
作者
Gao, Wei [1 ,3 ]
Cao, Dandan [1 ]
Wang, Yingjun [1 ,3 ]
Wu, Jing [1 ,3 ]
Wang, Ying [1 ]
Wang, Yawei [1 ,2 ,3 ]
Jiang, Guibin [1 ]
机构
[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
[2] Jianghan Univ, Inst Environm & Hlth, Wuhan 430056, Hubei, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
SEWAGE-TREATMENT PLANT; N-ALKANES; POLYCHLORINATED-BIPHENYLS; FLAME RETARDANTS; RISK-ASSESSMENT; PARTICLE-SIZE; DUST; AIR; INDOOR; C-10-C-13;
D O I
10.1021/acs.est.7b04657
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Chlorinated paraffins (CPs) are a class of compounds that are currently produced and used in large amounts in commercial products worldwide. In this study, food, indoor air, indoor dust, and drinking water samples were collected to evaluate the external exposure levels of CPs, and possible pathway for the general population in Beijing, China. Short chain CPs (SCCPs) and medium chain CPs (MCCPs) in 199 samples were analyzed using a gas chromatography tandem time-of-flight high-resolution mass spectrometry (GC-TOF-HR-MS) method. High levels of CPs were observed in the indoor environment from residential houses, offices, and student dormitories. The geometric mean concentrations (GM) of Sigma SCCPs and Sigma MCCPs in indoor dust were 92 mu g g(-1) and 82 mu g g(-1), respectively, while in indoor air, the concentrations were 80 ng M(-3 )and 3.4 ng m(-3), respectively. The GM of Sigma SCCPs and Sigma MCCPs in the diet were 83 ng g(-1) dry weight (dw) and 56 ng g(-1) dw, respectively. The most important external exposure routes to CPs to the general populations in Beijing were food intake and indoor dust ingestion. Indoor dust and indoor air posed higher risks for toddlers and infants than for adults.
引用
收藏
页码:32 / 39
页数:8
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