[Ecological risk assessment of bisphenol A in Chinese freshwaters].
Bisphenol A (BPA) has many toxic effects on aquatic organisms, of which the most obvious effect is the estrogenic effect. The data collected in the study were divided into two parts, based on the response of the tested organisms to the estrogenic effects of BPA and their exposed time, and the risk of BPA to Chinese aquatic water was assessed by using quotient method, quotient exponent and probability method, safety threshold value method and joint probability risk assessment, respectively. Similar results were derived from the above four methods. Aquatic organisms were more sensitive to the estrogenic effects of BPA than other toxic effects. The results of risk assessment from safety threshold value method were more accurate and confident than the other three methods. Using the chronic data of BPA's estrogenic effect on tested organisms as the endpoint for risk assessment in safety threshold value method, it was found that in 64.70% of the Chinese freshwaters more than 5% of aquatic organisms were affected by the estrogenic toxicity of BPA, and the maximum allowable concentration of BPA was 15.72 ng x L(-1). Using the acute data of such effects as endpoint in safety threshold value method, in about 20.43% volume of the Chinese freshwaters more than 5% of aquatic organisms were affected by the estrogenic toxicity of BPA, and the maximum allowable concentration was 2.24 x 10(2) ng x L(-1).
College of Environmental Science and Technology, Kunming University of Science and Technology, Kunming 650500, China. jeffwh87@gmail.com
Hao
H
Wang
Cheng-Lian
CL
Feng
Guang-Hui
GH
Guo
Rui-Qing
RQ
Zhang
Yue-Dan
YD
Liu
Feng-Chang
FC
Wu
D000818:Animals; D001559:Benzhydryl Compounds / Q000032:analysis* / Q000633:toxicity; D002681:China; D064308:Ecological Parameter Monitoring; D017753:Ecosystem; D052244:Endocrine Disruptors / Q000032:analysis / Q000633:toxicity; D004781:Environmental Exposure / Q000009:adverse effects; D004784:Environmental Monitoring; D005618:Fresh Water / Q000032:analysis*; D010636:Phenols / Q000032:analysis* / Q000633:toxicity; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000633:toxicity; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D052244:Endocrine Disruptors; D010636:Phenols; D014874:Water Pollutants, Chemical; C006780:bisphenol A; D000098826:Bisphenol A Compounds