Abstract
Perfluorooctane sulfonate (PFOS), as a new persistent organic pollutant, has attracted public attention, and it was detected in major water environment in domestic and abroad in recent years. The pollution status of PFOS in the part of freshwater bodies was reviewed,the Species Sensitivity Distributions (SSD) were generated based on the endpoints of survival, biochemistry, reproduction and growth and development. The HC5 derived from growth and development toxicity was 0.085 μg·L-1, which was significantly less than those derived from other endpoints. Further, an assessment of ecological risks posed by PFOS to aquatic organisms in surface waters of different countries was conducted based on the growth and development fitness by the method of joint probability curves (JPC). The results show that PFOS posed negligible ecological risk to freshwater investigated.
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