Perfluoroalkyl and Polyfluoroalkyl substances(PFASs) were quantified in river water and biological samples(acetonitrile extraction) collected from Jiangsu Hi-tech Fluorochemical Industry Park in Changshu by HPLC / negative ESI / MS / MS.8 PFASs and 14 PFASs were detected in water and biological samples,respectively.The concentrations of total PFASs ranged from 91.0-9374.9 ng.L-1 in river water samples and from 12.93 to 394.77ng.g-1wet weight in fish samples,which exceeded the highest level ever reported in China.Perfluorooctanoate acid(PFOA) and pentafluoropropionic acid(PFPrA) were predominant,and both contributed to more than 73% of the total PFASs in different water samples,while perfluorooctanesulfonic acid(PFOS) were not detected in all water samples.In biological samples,PFOA,PFOS and PFPrA are dominant,and higher concentrations of PFASs were found in fishes collected from the industry park than those from Changshu city.These results indicated that the pollution of PFOA and PFPrA in the surface water environment of the industry park of fluorine chemistry in Changshu has reached the highest level in China.Especially,high concentrations of PFPrA in water and biological samples suggested that the replacement of PFOS and PFOA by short-chain fluorochemicals has been generalized by some manufacturers in Jiangsu Hi-tech Fluorochemical Industry Park.Quantification of short-chain PFASs is needed in future work to draw better conclusions about their environmental fates.
Topics:
Changshu; Fluorochemical Industry Park; perfluorinated compounds; river water; biota samples