Zhang Wen-Ping, Zhang Zhen-Fei, Guo Chang-Sheng, Lü Jia-Pei, Deng Yang-Hui, Zhang Heng, Xu Jian
Center for Environmental Health Risk Assessment and Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
State Environmental Protection Key Laboratory of Ecological Effect and Risk Assessment of Chemicals, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Huan Jing Ke Xue. 2021 Apr 8;42(4):1801-1810. doi: 10.13227/j.hjkx.202008266.
To explore the pollution characteristics, potential sources, and ecological and health risk of organophosphate eaters (OPEs) in the surface water of Taihu Lake, water samples from 18 surrounding rivers were collected, as well as 11 water samples from Taihu Lake. The concentrations of 13 OPEs in the water were determined using UPLC-MS/MS, and the spatial distribution of the OPEs in surface water of Taihu Lake basin was further analyzed. The results indicate that, in addition to tripropyl phosphate (TPrP), 2-ethylhexyl diphenyl phosphate (EHDPP), and tricresyl phosphate (TCrP), ten OPEs were detected in all the water samples, the total concentration (ΣOPEs) ranged from 152.5 ng·L to 2524 ng·L, and the concentration median value was 519.2 ng·L. Tri(chloropropyl) phosphate (TCPP) and tri(2-chloroethyl) phosphate (TCEP) were the dominant OPEs, with the concentration ranges of 73.7-1753.9 ng·L (medium value:204.6 ng·L) and 43.9-313.5 ng·L (medium value:131.3 ng·L), respectively. The ΣOPEs decreased from the northwest region to the southeast, which corresponds to the economic and industrial development. The results of the source identification reveal that the wastewater discharge from electronics and textile enterprises, construction materials, and vehicular and marine traffic emissions may be the principal sources of the OPEs in Taihu Lake. The ecological risk assessment results indicate that only TCPP, tri(dichloropropyl) phosphate (TDCP), and triphenyl phosphate (TPhP) in some sites had a low risk. The health risk assessment reveals that there were no risks based on water intake, but the long-term risk of OPEs to the aquatic ecosystem and surrounding residents still need attention.
为探究太湖地表水有机磷酸酯（OPEs）的污染特征、潜在来源以及生态和健康风险，采集了太湖周边18条河流的水样以及11份太湖水样。采用超高效液相色谱-串联质谱法（UPLC-MS/MS）测定水中13种OPEs的浓度，并进一步分析太湖流域地表水OPEs的空间分布。结果表明，除磷酸三丙酯（TPrP）、2-乙基己基二苯基磷酸酯（EHDPP）和磷酸三甲苯酯（TCrP）外，所有水样中均检测到10种OPEs，总浓度（ΣOPEs）范围为152.5 ng·L至2524 ng·L，浓度中位数为519.2 ng·L。磷酸三（氯丙基）酯（TCPP）和磷酸三（2-氯乙基）酯（TCEP）是主要的OPEs，浓度范围分别为73.7-1753.9 ng·L（中位数：204.6 ng·L）和43.9-313.5 ng·L（中位数：131.3 ng·L）。ΣOPEs从西北区域向东南逐渐降低，这与经济和工业发展情况相符。源解析结果表明，电子和纺织企业废水排放、建筑材料以及车辆和船舶交通排放可能是太湖OPEs的主要来源。生态风险评估结果表明，仅部分点位的TCPP、磷酸三（二氯丙基）酯（TDCP）和磷酸三苯酯（TPhP）存在低风险。健康风险评估表明，基于饮水不存在风险，但OPEs对水生生态系统和周边居民的长期风险仍需关注。
