Shi Yali, Gao Lihong, Li Wenhui, Wang Yuan, Liu Jiemin, Cai Yaqi
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Civil and Environment Engineering School, University of Science and Technology Beijing, Beijing, 100083, China.
Environ Pollut. 2016 Feb;209:1-10. doi: 10.1016/j.envpol.2015.11.008. Epub 2015 Dec 7.
The occurrence, spatial distribution and seasonal variation of 14 organophosphate esters (OPEs) were investigated in urban surface water (river and lake water) from July 2013 to June 2014 in Beijing, China. Sewage influent and effluent samples, as well as rainwater and road runoff samples were also analyzed as the potential sources of OPEs in surface water. Tris(2-chloro-1-methylethyl) phosphate (TCPP) and tris(2-chloroethyl) phosphate (TCEP) were the most abundant OPEs with the average concentrations of 291 ng L(-1) and 219 ng L(-1), respectively. Relatively high concentrations of OPEs were detected in rivers located at southern and eastern urban of Beijing, which was probably attributed to the treated and untreated sewage discharge. Besides, higher levels of OPEs were observed in urban surface water in the summer, and the wet deposition (rainfall) was confirmed to be an important factor for this observation. Risk assessment showed low or medium risk of OPEs for the organisms (algae, crustacean and fish).
2013年7月至2014年6月期间，在中国北京对城市地表水（河水和湖水）中14种有机磷酸酯（OPEs）的发生、空间分布和季节变化进行了调查。还分析了污水进水和出水样本以及雨水和道路径流样本，作为地表水中OPEs的潜在来源。磷酸三（2-氯-1-甲基乙基）酯（TCPP）和磷酸三（2-氯乙基）酯（TCEP）是含量最高的OPEs，平均浓度分别为291 ng L⁻¹和219 ng L⁻¹。在北京城市南部和东部的河流中检测到相对较高浓度的OPEs，这可能归因于经过处理和未经处理的污水排放。此外，夏季城市地表水中的OPEs水平较高，降雨被证实是导致这一现象的重要因素。风险评估显示，OPEs对生物（藻类、甲壳类动物和鱼类）的风险为低或中等。
