渤海油气区周边海域PFASs的赋存特征与来源

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摘要为了解我国海上油田区域附近PFASs(多氟或全氟化合物)污染状况,本文针对我国渤海油田区所在海域采集了92个海水样品,并对其中19种PFASs及其新型替代品的含量进行了分析。结果表明,渤海油气区周边海水中总PFASs浓度范围为9.33~113ng/L,与中国其他海域相比,渤海油田区周边海水中总PFASs含量较高。传统PFASs中,全氟辛酸(PFOA)是大部分样品中的主要PFASs。新型替代品中,六氟环氧丙烷二聚酸(HFPO-DA)的浓度相对较高,浓度中位数为1.82ng/L,而在所有样品中6:2氯代多氟醚磺酸(6:2Cl-PFESA)均未检出。从区域分布来看,总PFASs浓度较高的油田位于渤海西部。总PFASs含量与离岸距离等影响因素相关性分析表明,渤海油气区附近海水中总PFASs含量与离岸距离显著相关,说明陆源是渤海油气区中PFASs污染的主要来源。

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	雷明
	张灿
	周智杰
	王晓萌
	刘晓星
	杨文超
	程嘉熠
	陈虹

关键词 ：多氟/全氟化合物(PFASs), 海上油气区, 来源分析, 赋存特征

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

收稿日期: 2022-04-11

PACS:

X55

基金资助:国家自然科学基金资助项目(41876128,41806128)

通讯作者: 张灿,高级工程师,zhangcan@nmemc.org.cn E-mail: zhangcan@nmemc.org.cn

作者简介: 雷明(1998-),男,吉林珲春人,大连海事大学硕士研究生,主要研究方向为海洋污染化学。发表论文1篇。

引用本文:

雷明, 张灿, 周智杰, 王晓萌, 刘晓星, 杨文超, 程嘉熠, 陈虹. 渤海油气区周边海域PFASs的赋存特征与来源[J]. 中国环境科学, 2022, 42(11): 5351-5357. LEI Ming, ZHANG Can, ZHOU Zhi-jie, WANG Xiao-meng, LIU Xiao-xing, Yang Wen-chao, CHENG Jia-yi, CHEN Hong. Occurrence and source of Per- and Polyfluoroalkyl Substances (PFASs) in seawater around oilfields in the Bohai Sea, China. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(11): 5351-5357.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I11/5351

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