渤海油气区周边海域PFASs的赋存特征与来源

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Abstract In order to study the pollution status of the PFASs (Per- and polyfluoroalkyl substances) near the offshore oil field area in China, in this study, concentrations of 19 legacy and novel PFASs in 92 seawater samples collected near the oilfields in Bohai Sea of China were measured. The total PFAS concentrations ranged from 9.33 to 113ng/L. As compared with other sea areas in China, the total concentrations of PFASs in the seawater around the Oilfields in the Bohai Sea were relatively high. Perfluorooctanoate (PFOA) was the predominant PFASs in most of the samples. Meanwhile, relatively high concentrations of hexafluoropropylene oxide dimer acid (HFPO-DA) were observed with a median concentration of 1.82ng/L, while 6:2 chlorinated polyfluorinated ether sulfonate (6:2Cl-PFESA) was not detected in all samples. Oilfields with high PFAS concentrations in surrounding seawater are located in the west of the Bohai Sea. The correlation analysis between the total PFASs concentrations and the offshore distance showed that the concentrations of the total PFASs in seawater near the oilfields in Bohai Sea were significantly correlated with the offshore distance, indicating that the land source was the main contributor of PFASs pollution in oilfields in Bohai Sea.

Key words： poly- and perfluoroalkyl substances (PFASs) offshore oilfield source apportionment occurrence characteristics

Received: 11 April 2022

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X55

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	Articles by authors
	LEI Ming
	ZHANG Can
	ZHOU Zhi-jie
	WANG Xiao-meng
	LIU Xiao-xing
	Yang Wen-chao
	CHENG Jia-yi
	CHEN Hong

Cite this article:

LEI Ming,ZHANG Can,ZHOU Zhi-jie等. Occurrence and source of Per- and Polyfluoroalkyl Substances (PFASs) in seawater around oilfields in the Bohai Sea, China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(11): 5351-5357.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I11/5351

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