Distribution and long-range transport of polyfluoroalkyl substances in the Arctic, Atlantic Ocean and Antarctic coast

详细信息    查看全文

• 作者：Zhen Zhao ; Zhiyong Xie ; Axel M?ller ; Renate Sturm ; Jianhui Tang ; Gan Zhang ; Ralf Ebinghaus
• 关键词：Polyfluoroalkyl substances (PFASs) ; Seawater ; Marine environment ; Long-range transport
• 刊名：Environmental Pollution
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：170
• 期：Complete
• 页码：71-77
• 全文大小：693 K

文摘

The global distribution and long-range transport of polyfluoroalkyl substances (PFASs) were investigated using seawater samples collected from the Greenland Sea, East Atlantic Ocean and the Southern Ocean in 2009-2010. Elevated levels of ¦²PFASs were detected in the North Atlantic Ocean with the concentrations ranging from 130 to 650?pg/L. In the Greenland Sea, the ¦²PFASs concentrations ranged from 45 to 280?pg/L, and five most frequently detected compounds were perfluorooctanoic acid (PFOA), perfluorohexanesulfonate (PFHxS), perfluorohexanoic acid (PFHxA), perfluorooctane sulfonate (PFOS) and perfluorobutane sulfonate (PFBS). PFOA (15?pg/L) and PFOS (25-45?pg/L) were occasionally found in the Southern Ocean. In the Atlantic Ocean, the ¦²PFASs concentration decreased from 2007 to 2010. The elevated PFOA level that resulted from melting snow and ice in Greenland Sea implies that the Arctic may have been driven by climate change and turned to be a source of PFASs for the marine ecosystem.