...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Occurrence of Perfluoroalkyl Compounds in Surface Waters from the North Pacific to the Arctic Ocean
【24h】

Occurrence of Perfluoroalkyl Compounds in Surface Waters from the North Pacific to the Arctic Ocean

机译：从北太平洋到北冰洋的地表水中全氟烷基化合物的存在

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Perfluoroalkyl compounds (PFCs) were determined in 22 surface water samples (39-76°N) and three sea ice core and snow samples (77-87°N) collected from North Pacific to the Arctic Ocean during the fourth Chinese Arctic Expedition in 2010. Geographically, the average concentration of ∑PFC in surfece water samples were 560 ± 170 pg L~(-1) for the Northwest Pacific Ocean, 500 ± 170 pg L~(-1) for the Arctic Ocean, and 340 ± 130 pg L~(-1) for the Bering Sea, respectively. The perfluoroalkyl carboxylates (PFCAs) were the dominant PFC class in the water samples, however, the spatial pattern of PFCs varied. The C_5, C, and C_8 PFCAs (i.e., perfluoropentanoate (PFPA), perfluoroheptanoate (PFHpA), and perfluorooctanoate (PFOA)) were the dominant PFCs in the Northwest Pacific Ocean while in the Bering Sea the PFPA dominated. The changing in the pattern and concentrations in Pacific Ocean indicate that the PFCs in surface water were influenced by sources from the East-Asian (such as Japan and China) and North American coast, and dilution effect during their transport to the Arctic. The presence of PFCs in the snow and ice core samples indicates an atmospheric deposition of PFCs in the Arctic. The elevated PFC concentration in the Arctic Ocean shows that the ice melting had an impact on the PFC levels and distribution. In addition, the C_4 and C_5 PFCAs (i.e., perfluorobutanoate (PFBA), PFPA) became the dominant PFCs in the Arctic Ocean indicating that PFBA is a marker for sea ice melting as the source of exposure.
机译：在2010年第四次中国北极探险期间从北太平洋收集到北冰洋的22个地表水样品（39-76°N）和三个海冰芯和雪样品（77-87°N）中测定了全氟烷基化合物（PFC） 。从地理上看，西北太平洋海域水样本中∑PFC的平均浓度分别为560±170 pg L〜（-1），北冰洋的500±170 pg L〜（-1）和340±130 pg L〜（-1）分别代表白令海。全氟烷基羧酸盐（PFCA）是水样品中的主要PFC类，但是，PFC的空间格局各不相同。 C_5，C和C_8 PFCA（即全氟戊酸酯（PFPA），全氟庚酸酯（PFHpA）和全氟辛酸酯（PFOA））是西北太平洋的主要PFC，而在白令海中则以PFPA为主。太平洋格局和浓度的变化表明，地表水中的PFC受东亚（如日本和中国）和北美沿岸的来源以及它们向北极运输过程中的稀释作用的影响。雪芯和冰芯样品中PFC的存在表明北极中PFC的大气沉积。北冰洋中PFC浓度升高表明冰融化对PFC含量和分布有影响。另外，C_4和C_5 PFCA（即全氟丁酸酯（PFBA），PFPA）成为北冰洋的主要PFC，表明PFBA是海冰融化的标志物，是暴露的来源。

著录项

  • 来源
    《Environmental Science & Technology》 |2012年第2期|p.661-668|共8页
  • 作者

    Minghong Cai; Zhen Zhao; Zhigao Yin; Lutz Ahrens; Peng Huang; Minggang Cai; Haizhen Yang; Jianfeng He; Renate Sturm; Ralf Ebinghaus; Zhiyong Xie;

  • 作者单位

    SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China,College of environmental science and engineering, Tongji University, Shanghai 200092, China;

    Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research GmbH, Institute of Coastal Research, Max-Planck Straee 1, D-21S02 Geesthacht, Germany;

    College of environmental science and engineering, Tongji University, Shanghai 200092, China;

    Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research GmbH, Institute of Coastal Research, Max-Planck Straee 1, D-21S02 Geesthacht, Germany;

    College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China;

    College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China;

    College of environmental science and engineering, Tongji University, Shanghai 200092, China;

    SOA Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;

    Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research GmbH, Institute of Coastal Research, Max-Planck Straee 1, D-21S02 Geesthacht, Germany;

    Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research GmbH, Institute of Coastal Research, Max-Planck Straee 1, D-21S02 Geesthacht, Germany;

    Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research GmbH, Institute of Coastal Research, Max-Planck Straee 1, D-21S02 Geesthacht, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号