RETRACTED: Temporal Variations of Polycyclic Aromatic Hydrocarbons in the Seawater at Tsukumo Bay, Noto Peninsula, Japan, during 2014–2018

Tetsuya Matsunaka, Seiya Nagao, Mutsuo Inoue, Rodrigo Mundo, Ning Tang, Nobuo Suzuki, Shouzo Ogiso and Kazuichi Hayakawa
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Tetsuya Matsunaka: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Seiya Nagao: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Mutsuo Inoue: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Rodrigo Mundo: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Ning Tang: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Nobuo Suzuki: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Shouzo Ogiso: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
Kazuichi Hayakawa: Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan

IJERPH, 2020, vol. 17, issue 3, 1-13

Abstract: Concentrations of phase-partitioning 13 polycyclic aromatic hydrocarbons (PAHs) in seawater were investigated in the Tsukumo Bay, Noto Peninsula, Japan, during 2014–2018, to improve the understanding of the environmental behavior of PAHs in the coastal areas of the Japan Sea. Total PAH (particulate plus dissolved) concentrations in surface seawater were in the range 0.24–2.20 ng L ?1 (mean 0.89 ng L ?1 ), an order of magnitude lower than the mean values observed in the Japan Sea in 2008 and 2010. Although the PAH contamination levels during 2014–2018 were significantly lower than those in the East China Sea, the levels increased from 2014 to 2017 and were maintained at the higher level during 2017–2018. The main sources of particulate and dissolved PAHs during 2014–2018 were combustion products, of which the former were more influenced by liquid fossil-fuel combustion and the latter by biomass or coal combustion. The increase in particulate PAH concentrations in October–December during 2014–2018 was due to the impact of PAH-rich airmasses transported from the East Asian landmass in the northwesterly winter monsoon winds. The increase in dissolved PAH levels during July–September in 2014, 2016, 2017, and 2018 indicates that the Tsukumo Bay is possibly impacted by the PAH-rich summer continental shelf water transported by the Coastal Branch of the Tsushima Warm Current, which flows into the Japan Sea from the East China Sea.

Keywords: polycyclic aromatic hydrocarbons; Japan Sea; Tsukumo Bay; Tsushima Warm Current; northwesterly winter monsoon; surface runoff (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:17:y:2020:i:3:p:873-:d:314618

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