State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
Nanjing University & Yancheng Academy of Environmental Protection Technology and Engineering, Yancheng, 224000, China.
Environ Sci Pollut Res Int. 2019 Jul;26(19):19795-19803. doi: 10.1007/s11356-019-05236-5. Epub 2019 May 14.
Organophosphate esters (OPEs), as re-emerging contaminants considered to be a potential health concern, are ubiquitous in the environment and have been widely investigated. However, little is known on the safe OPE concentrations in the water quality criteria for the protection of the aquatic environment, which is an indispensable part of environmental management. In the present study, aquatic acute and chronic predicted no-effect concentrations (PNECs) of six frequently detected OPEs were derived from the hazardous concentrations for 5% of species (HCs), respectively. The acute PNECs for the selected OPEs ranged from 17.70 to 3562 μg/L, while the chronic PNECs ranged from 4.6 × 10 to 61.85 μg/L. Among these OPEs, tricresyl phosphate (TCrP) exhibited the lowest acute PNEC, while tris(1,3-dichloro-2-propyl) phosphate (TDCPP) presented chronic PNEC, which indicated that it has a higher toxicity effect on the aquatic environment. Furthermore, the aquatic ecological risks of individual OPEs (except for TDCPP) were deemed to be relatively low in Chinese surface water; however, the aquatic ecological risks of TDCPP and ΣOPEs indicated that they have potential adverse effects and should be considered as a potential health concern. The probability of 5% of aquatic organisms being affected by ΣOPEs was in the range of 0.21 to 17.39% based on the joint probability curve method.
有机磷酸酯（OPEs）作为一种新兴的污染物，被认为是潜在的健康关注点，它们在环境中无处不在，已经得到了广泛的研究。然而，对于水生环境保护水质标准中 OPE 的安全浓度知之甚少，而这是环境管理不可或缺的一部分。在本研究中，分别从 5%物种危害浓度（HCs）中推导出了六种常见检测到的 OPE 的水生急性和慢性预测无效应浓度（PNEC）。所选 OPE 的急性 PNEC 范围为 17.70 至 3562μg/L，而慢性 PNEC 范围为 4.6×10 至 61.85μg/L。在这些 OPE 中，磷酸三（2-氯乙基）酯（TCrP）表现出最低的急性 PNEC，而磷酸三（1,3-二氯-2-丙基）酯（TDCPP）表现出慢性 PNEC，这表明它对水生环境具有更高的毒性作用。此外，除 TDCPP 外，个别 OPEs（TDCPP 除外）在中国地表水的水生生态风险被认为相对较低；然而，TDCPP 和ΣOPEs 的水生生态风险表明它们具有潜在的不利影响，应被视为潜在的健康关注点。基于联合概率曲线法，ΣOPEs 影响 5%水生生物的概率范围在 0.21 至 17.39%之间。
