潍坊市滨海开发区人群血清中溴代阻燃剂浓度水平的时间变化趋势

Temporal trends of concentration of brominated flame retardants in serum of population in Binhai Development District of Weifang City

本研究以溴系阻燃剂生产源区潍坊市滨海开发区作为研究区域,对潍坊市人群血清中PBDEs和NBFRs的浓度水平分布及时间变化趋势进行了分析。潍坊市人群血清样本中的PBDEs浓度(100.52—795.62 ng·g^(−1)lw(lipid weight,脂重),2016年;85.55—913.12 ng·g^(−1)lw,2017年)比NBFRs的浓度(0.43—2.37 ng·g^(−1)lw,2016年;1.36—2.28 ng·g^(−1)lw,2017年)高出1—3个数量级,表明PBDEs仍为当地主要的溴系阻燃剂污染物。8种PBDEs同族体中,BDE-209的浓度(94.45—769.19 ng·g^(−1)lw,2016年;76.02—900.63 ng·g^(−1)lw,2017年)最高,这可能是因为十溴联苯醚产品仍在当地生产和使用,且BDE-209作为十溴联苯醚产品的主要成分被大量释放到环境中并被人体吸收。潍坊市滨海开发区人群血清中NBFRs的检出率较高,尤其是PBBz和PBT在2016年和2017年人群混合血清样本中的检出率达到100%,这表明NBFRs在人群体内普遍存在,应该引起关注。值得注意的是,潍坊市滨海开发区人群血清中PBDEs浓度在2007—2015年下降后,2015—2017年间却出现了反弹上升的趋势,而且HBB和PBEB在2014—2017年也呈现出上升的趋势,说明当地人群暴露风险也在增加。

In this study,we analyzed the concentration distribution and temporal trend of PBDEs and NBFRs in serum of local residents from.Binhai Development district of Weifang City,which is the production area of brominated flame retardant.The concentrations of PBDEs(100.52—795.62 ng·g^(−1)lw,2016;85.55—913.12 ng·g^(−1)lw,2017)in serum of loacal residents were 1—3 orders of magnitude higher than that of NBFRs(0.43—2.37 ng·g^(−1)lw,2016;1.36—2.28 ng·g^(−1)lw,2017),indicating that PBDEs was still the main brominated flame retardant pollutants.BDE-209 showed the highest concentration(94.45—69.19 ng·g^(−1)lw,2016;76.02—900.63 ng·g^(−1)lw,2017),which may be due to the fact that decabromodiphenyl ether products was still produced and used locally,and BDE-209 as the main component of decabromodiphenyl ether products,was released into the environment in large quantities and absorbed by the human body.The detection rate of NBFRs in the serum was relatively high,especially,the detection rate of PBBz and PBT in the mixed serum in 2016 and 2017 reached 100%,which indicated that NBFRs existed widely in local residents and should be paid attention to.It should be noted that the concentrations of PBDEs in the serum of local residents decreased from 2007 to 2015,but rebounded and increased from 2015 to 2017,and HBB and PBEB also showed an increasing trend from 2014 to 2017,indicating that the health exposure risk of local population was also increasing.