First Report on the Occurrence and Bioaccumulation of Hexafluoropropylene Oxide Trimer Acid (HFPO-TA): An Emerging Concern,Environmental Science & Technology

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First Report on the Occurrence and Bioaccumulation of Hexafluoropropylene Oxide Trimer Acid (HFPO-TA): An Emerging Concern
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2017-08-07 00:00:00 , DOI: 10.1021/acs.est.7b02259
Yitao Pan _{1,

2} , Hongxia Zhang ₁ , Qianqian Cui ₁ , Nan Sheng ₁ , Leo W. Y. Yeung ₃ , Yong Guo ₄ , Yan Sun ₄ , Jiayin Dai ₁

Affiliation

Here we report on the occurrence of a novel perfluoroalkyl ether carboxylic acid (PFECA), ammonium perfluoro-2-[(propoxy)propoxy]-1-propanoate (HFPO-TA), in surface water and common carps (Cyprinus carpio) collected from Xiaoqing River and in residents residing near a fluoropolymer production plant in Huantai County, China. Compared with the levels in the upstream of Xiaoqing River, HFPO-TA concentrations (5200–68500 ng/L) were approximately 120–1600 times higher at the downstream, after receiving fluoropolymer plant effluent from a tributary. The riverine discharge of HFPO-TA was estimated to be 4.6 t/yr, accounting for 22% of total PFAS discharge. In the wild common carp collected downstream from the point source, HFPO-TA was detected in the blood (median: 1510 ng/mL), liver (587 ng/g ww), and muscle (118 ng/g ww). The log BCFblood of HFPO-TA (2.18) was significantly higher than that of PFOA (1.93). Detectable levels of HFPO-TA were also found in the sera of residents (median: 2.93 ng/mL). This is the first report on the environmental occurrence and bioaccumulation of this novel chemical. Our results indicate an emerging usage of HFPO-TA in the fluoropolymer manufacturing industry and raise concerns about the toxicity and potential health risks of HFPO-TA to aquatic organisms and humans.

更新日期：2017-08-07

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