Key Laboratory of Coastal Ecology and Environment of State Oceanic Administration, Department of Marine Chemistry, National Marine Environmental Monitoring Center, Dalian 116023, China.
Environ Pollut. 2012 Nov;170:26-31. doi: 10.1016/j.envpol.2012.06.016. Epub 2012 Jul 2.
Concentrations of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) in influents, effluents and sludges were investigated by analyzing the samples from twelve wastewater treatment plants (WWTPs) in China. The highest concentrations of PFOS and PFOA in influents were found to occur in municipal and industrial WWTPs, respectively. Relative to PFOS and PFOA concentrations in influents, elevated concentrations were observed in effluents from WWTPs applying anaerobic-anoxic-oxic wastewater treatment process. Importantly, application of previously reported organic carbon normalized partition coefficients (K(OC)) derived from sediment-based sorption experiments appear to underestimate the PFOS and PFOA levels in biosolids quantified in the current study. PFOS and PFOA levels in effluents were found to be approximately 27 and 2 times higher than those detected in the effluent-receiving seawater, respectively. However, their levels in this area of seawater haven't exceeded the provisional short-term health advisories in drinking water issued by U.S. EPA yet.
本研究分析了中国 12 家污水处理厂（WWTP）的进水、出水和污泥样本，调查了全氟辛烷磺酸（PFOS）和全氟辛酸（PFOA）的浓度。研究发现，市政和工业 WWTP 的进水 PFOS 和 PFOA 浓度最高。与 WWTP 进水的 PFOS 和 PFOA 浓度相比，采用厌氧-缺氧-好氧废水处理工艺的 WWTP 出水中的浓度较高。重要的是，应用先前报道的基于沉积物吸附实验的有机碳归一化分配系数（K（OC））似乎低估了当前研究中生物固体中定量的 PFOS 和 PFOA 水平。出水中的 PFOS 和 PFOA 水平分别比在受纳海水中检测到的水平高约 27 倍和 2 倍。然而，该海域海水中的这些物质的含量尚未超过美国环保署发布的饮用水短期健康建议值。
