岷江流域全氟化合物的污染特征及排放通量

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摘要

采用超高效液相色谱串联质谱分析了四川省岷江流域水体中13种全氟化合物（PFASs）的浓度水平.结果表明，岷江流域水相中PFASs的浓度为1.54~30.2ng/L，平均值为（11.2±8.0）ng/L，浓度最高点出现在乐山下游（30.2ng/L）.其中，岷江流域水相中最主要的PFASs为全氟丁烷羧酸（PFBA），浓度为0.16~28.4ng/L，占总全氟化合物的54.0%~94.1%（都江堰除外）.岷江流域沉积物中PFASs浓度最高点在宜宾三江（岷江、金沙江和长江）汇合处（47.5ng/g dw），最低值在都江堰（0.334ng/g dw）.其中，主要的PFASs是全氟己烷羧酸（PFHxA）（4.44%~66.9%）和全氟辛烷羧酸（PFOA）（1.52%~77.5%）.岷江流域PFASs的年排放通量为1.443t/a，排放通量最高的为PFBA（1.037t/a），占总排放通量的71.9%.

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关键词 ：全氟化合物, 岷江, 污染特征, 排放通量

Abstract：

Thirteen kinds of perfluoroalkyl and polyfluoroalkyl substances (PFASs) were analyzed in water and sediment samples collected from Minjiang River by ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). PFASs in water phase were in the range of 1.54~30.2ng/L, with mean value of (11.2±8.0) ng/L, and the greatest value appeared at the down stream of Leshan city (30.2ng/L). In addition, perfluorobutanoic acid (PFBA) was the predominant PFASs in water phase, with the concentrations of 0.16~28.4ng/L and concentration profile of 54.0%~94.1% (except Dujiang yian). PFAS concentrations in sediment displayed the highest level (47.5ng/g dw) at Yibin city, near the confluence of Minjiang River, Jinsha River and Yangtze River, while the lowest one was at Dujiang Yan (0.334ng/g dw). Furthermore, the main PFASs in sediment were perfluorohexanoate (PFHxA) (4.44%~66.9%) and perfluroroocantanoic acid (PFOA) (1.52%~77.5%). Estimated flux of PFASs in Minjiang River was 1.443tons/year, and PFBA displayed the greatest mass loading (1.037tons/year), accounting for 71.9% of total flux.

Key words： perfluoroalkyl substances Minjiang River pollution characteristics estimated flux

收稿日期: 2018-11-19

PACS:

X522

基金资助:

国家自然科学基金资助项目（21607018，41601422）；四川省教育厅科研基金资助项目（2017Z055）；成都信息工程大学引进人才科研启动项目资助项目（KYTZ201605）；成都信息工程大学中青年学术带头人科研基金资助项目（J201714）

通讯作者: 方淑红,讲师,fsh@cuit.edu.cn E-mail: fsh@cuit.edu.cn

作者简介: 方淑红(1986-),女,山东济宁人,讲师,博士,研究方向为环境化学.发表论文17篇.

引用本文:

方淑红, 李成, 卞玉霞, 王迪, 郝云庆, 印红玲, 孙静. 岷江流域全氟化合物的污染特征及排放通量[J]. 中国环境科学, 2019, 39(7): 2983-2989. FANG Shu-hong, LI Cheng, BIAN Yu-xia, Wang Di, HAO Yun-qing, YIN Hong-ling, SUN Jing. Pollution characteristics and flux of perfluoroalkyl substances in Minjiang River. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(7): 2983-2989.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2019/V39/I7/2983

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