Bioaccessibility of polychlorinated biphenyls in workplace dust and its implication for risk assessment
文献类型: 外文期刊
第一作者: Kang, Yuan
作者: Kang, Yuan;Li, Laisheng;Zhang, Qiuyun;Zeng, Lixuan;Luo, Jiwen;Kang, Yuan;Man, Yubon;Wong, Ming Hung;Kang, Yuan;Man, Yubon;Wong, Ming Hung;Yin, Yi
作者机构:
关键词: PCBs;Workplace dust;Bioaccessibility;Risk Assessment
期刊名称:CHEMOSPHERE ( 影响因子:7.086; 五年影响因子:6.956 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: Human exposure to bioaccessible PCBs via indoor dust is limited around the world. In the present study. the workplace dust sample from commercial office, hospital, secondary school, shopping mall, electronic factory and manufacturing plant were collected from Hong Kong for PCBs analyses. Total PCBs concentrations ranged from 46.8 to 249 ng g~(-1), with a median of 107 ng g~(-1). Manufacturing plant showed the highest concentration among all of sampling sites. PCB 77 was found as the dominant congeners. The bioaccessibility of PCBs in small intestinal juice ranging from 8.3% to 26.0% was significantly higher than that in gastric condition, ranging from 4.8% to 12.4%. In addition, significant negative correlations (p < 0.05) were observed between K_(OW) and bioaccessibility for all workplace dust samples. Risk assessment indicated that the averaged daily dose of dioxin-like PCBs via non dietary intake of workplace dust, considering the bioaccessibility of PCBs, were much lower than the TDI of dioxins (2.3 pg WHO-TEQ kg bw~(-1) d~(-1)) established by Joint FAO/WHO Expert Committee on Food Additives.
分类号: X5
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