Environment Research Institute, Shandong University, Qingdao 266237, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
J Environ Sci (China). 2022 May;115:277-285. doi: 10.1016/j.jes.2021.07.029. Epub 2021 Aug 14.
The production and application of organophosphate esters (OPEs) have dramatically increased in recent years due to their use as a replacement for brominated flame retardants. In this study, 13 OPEs (ΣOPEs) were analyzed in indoor air samples from kitchens and living rooms in 14 residential homes in Beijing, China. The concentrations of ΣOPEs in kitchen air samples (mean: 13 ng/m) were significantly (p < 0.05) higher than in living room air samples (5.0 ng/m). In addition, paired window surface organic film samples were collected and analyzed to investigate film-air partitioning, exhibiting a mean concentration of ΣOPEs of 4100 ng/m. The congener profiles showed that tris(2-chloroisopropyl) phosphate (TCPP) was the predominant compound in both window film samples (48%) and the corresponding indoor air sample (56%). The estimated daily intakes (EDI) of OPEs via indoor air inhalation were 2.8 and 1.4 ng/kg/day for infants and adults, respectively, both of which are below the reference dose values (RfDs). Overall, these findings indicate that OPEs in the indoor air environment of residential homes in Beijing are not likely to pose a health risk to the general population.
近年来，由于有机磷酸酯 (OPEs) 可用作溴化阻燃剂的替代品，其产量和应用急剧增加。本研究分析了中国北京 14 户住宅厨房和客厅空气中的 13 种 OPEs（ΣOPEs）。厨房空气中 ΣOPEs 的浓度（平均值：13ng/m）明显高于客厅空气中的浓度（5.0ng/m）（p<0.05）。此外，还收集并分析了配对的窗户表面有机薄膜样本，以研究薄膜-空气分配情况，结果表明ΣOPEs 的平均浓度为 4100ng/m。同系物分布表明，三（2-氯异丙基）磷酸酯（TCPP）是窗膜样本（48%）和相应室内空气样本（56%）中含量最多的化合物。通过室内空气吸入估算的 OPEs 每日摄入量（EDI），婴儿和成人分别为 2.8 和 1.4ng/kg/day，均低于参考剂量值（RfD）。总体而言，这些发现表明，北京住宅室内空气环境中的 OPEs 不太可能对一般人群构成健康风险。
