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红枫湖流域表层沉积物中全氟化合物的污染特征

刘 琰 江秋枫 韩 梅 赵兴茹 郭 睿

刘 琰, 江秋枫, 韩 梅, 赵兴茹, 郭 睿. 红枫湖流域表层沉积物中全氟化合物的污染特征[J]. 环境科学研究, 2015, 28(4): 517-523.
引用本文: 刘 琰, 江秋枫, 韩 梅, 赵兴茹, 郭 睿. 红枫湖流域表层沉积物中全氟化合物的污染特征[J]. 环境科学研究, 2015, 28(4): 517-523.
LIU Yan, JIANG Qiufeng, HAN Mei, ZHAO Xingru, GUO Rui. Contamination Profiles of Perfluorinated Substances in Surface Sediments of Hongfeng Lake Basin[J]. Research of Environmental Sciences, 2015, 28(4): 517-523.
Citation: LIU Yan, JIANG Qiufeng, HAN Mei, ZHAO Xingru, GUO Rui. Contamination Profiles of Perfluorinated Substances in Surface Sediments of Hongfeng Lake Basin[J]. Research of Environmental Sciences, 2015, 28(4): 517-523.

红枫湖流域表层沉积物中全氟化合物的污染特征

基金项目: 国家水体污染控制与治理科技重大专项(2014ZX07405-001-04)

Contamination Profiles of Perfluorinated Substances in Surface Sediments of Hongfeng Lake Basin

  • 摘要: PFCs(perfluorinated compounds, 全氟化合物)因具有持久性、生物富集效应和毒性而受到环境科学领域的普遍关注. 采用超高效液相色谱-串联质谱联用仪(UPLC-MS/MS)并结合固相萃取的方法,对贵阳市主要饮用水水源地——红枫湖主要入湖支流及湖区表层沉积物中10种PFCs的质量分数进行了检测,分析了其污染水平、空间分布及组成特征. 结果表明,各采样点w(∑PFCs)(10种PFCs的总质量分数)为0.27~1.65 ng/g,其中PFBA(全氟丁酸)、PFPeA(全氟戊酸)、PFOA(全氟辛酸)、PFBS(全氟丁烷磺酸)、PFOS(全氟辛烷磺酸)及PFHxA(全氟己酸)不仅检出率高,而且对各采样点w(∑PFCs)的贡献较大,是红枫湖表层沉积物中主要的PFCs;受湖区水文水动力条件及沉积物有机质的影响,北湖表层沉积物中w(∑PFCs)高于南湖,并且全湖w(∑PFCs)的最高值位于出湖口处,达到1.65 ng/g;红枫湖流域表层沉积物中的w(PFOA)和w(PFOS)分别为0.07~0.51和nd(未检出)~0.16 ng/g,与国内外其他流域相比处于较低水平;大气沉降可能是红枫湖流域PFCs的主要来源.

     

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