Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Wake O-24, Nomi, Ishikawa 923-1224, Japan; Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan.
Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan.
Mar Pollut Bull. 2022 Jul;180:113749. doi: 10.1016/j.marpolbul.2022.113749. Epub 2022 May 19.
Concentrations of 13 phase-partitioned polycyclic aromatic hydrocarbons (PAHs) in seawater were monitored monthly off Oki Island, Japan, during 2015-2019 to elucidate seasonal variations, main source, and transport pathways of PAHs in the southwestern Sea of Japan. Total PAH (dissolved plus particulate) concentrations in surface seawater at 36°09.0'N, 133°17.3'E (site OK) were in the range 0.49-9.36 ng L (mean 2.77, SD 2.05 ng L) with higher levels in summer-autumn, an order of magnitude lower than those in the East China Sea during 2005 and 2009-2011 and about one-third of those recorded in the Sea of Japan in 2008 and 2010. The main sources of dissolved and particulate PAHs were combustion products. Increasing dissolved PAH levels during July-October indicate that the area around southern Oki Island is impacted by PAH-rich summer continental-shelf water transported by the Tsushima Warm Current flowing from the East China Sea.
2015 年至 2019 年期间，每月监测日本大岛（Oki Island）附近海域的 13 种分配相多环芳烃（PAHs）浓度，以阐明日本西南部海域海水中 PAHs 的季节性变化、主要来源和输运途径。在 36°09.0'N、133°17.3'E（OK 站位）的表层海水中，总 PAH（溶解态加颗粒态）浓度范围为 0.49-9.36ng/L（平均值 2.77，SD 2.05ng/L），夏季到秋季浓度较高，与 2005 年和 2009-2011 年的东海相比，浓度低一个数量级，与 2008 年和 2010 年的日本海相比，低约三分之一。溶解态和颗粒态 PAHs 的主要来源是燃烧产物。7 月至 10 月期间溶解态 PAH 浓度升高表明，大岛南部地区受到了来自东海的对马暖流输送的富含 PAH 的夏季陆架水的影响。
