Occurrence and human exposure assessment of organophosphate esters in atmospheric PM2.5 in the Beijing-Tianjin-Hebei region, China

文献类型： 外文期刊

第一作者： Zhang, Weiwei

作者： Zhang, Weiwei;Zhang, Weiwei;Zhu, Ying;Wang, Dou;Yang, Ruiqiang;Li, Yingming;Matsiko, Julius;Zuo, Peijie;Zhang, Qinghua;Jiang, Guibin;Wang, Pu;Zhang, Qinghua;Wang, Pu;Wang, Dou;Matsiko, Julius;Zuo, Peijie;Qin, Long;Zhang, Qinghua;Yang, Xing

作者机构：

关键词： Organophosphate esters; The Beijing-Tianjin-Hebei region; Atmospheric fine particles; Health risk assessment

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2020 年 206 卷

页码：

收录情况： SCI

摘要： Organophosphate esters (OPEs) in atmospheric fine particles (PM2.5) were comprehensively investigated in the Beijing-Tianjin-Hebei (BTH) region from April 2016 to March 2017. The concentrations of Sigma 8OPEs in all the five sampling sites ranged from 90 to 8291 pg/m(3) (mean 1148 + 1239 pg/m(3); median 756 pg/m(3)). The highest level (median 1067 pg/m(3)) was found at one of the urban sites in Beijing, followed by Tianjin (746 pg/m(3)) and Shijiazhuang (724 pg/m(3)). Tris(2-chlomethyl) phosphate (TCEP) and tri[(2R)-1-chloro-2-propyl] phosphate (TCPP) were the dominant compounds across the five sampling locations. Generally, the concentrations of chlorinated OPEs were relatively higher in summer than in winter (p < 0.05), but no significant seasonal difference was discovered for non-chlorinated individual OPEs. The concentrations of tri-n-butyl phosphate (TBP), TCEP, TCPP and triphenyl phosphate (TPP) were positively correlated with the meteorological parameters (i.e. temperature and relative humidity) (p < 0.05), indicating an evident influence of meteorological condition on OPE distribution. We observed a negative correlation (p < 0.05) between octanol-air partition coefficients (logK(oa)) and the ratio of PM2.5 -bound OPE concentrations to total suspended particulates-bound OPE concentrations, suggesting that physicochemical properties affect the particle-size distribution of OPEs. Furthermore, the median value of cancer hazard quotients (HQs) of TCEP was higher than TBP and tris(2-ethylhexyl) phosphate (TEHP). The health risk assessment showed that HQ values for children were similar to 1.6 times higher than those for adults. Relatively higher health risk induced by PM2.5-bound OPEs via inhalation was found during severe hazy days than in clear days.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序