京都府舞鶴湾の鉛を中心とした重金属汚染実態調査4ー2009年度調査結果と総括ー

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  • キョウトフ マイズルワン ノ ナマリ オ チュウシン ト シタ ジュウキンゾク オセン ジッタイ チョウサ 4 2009ネンド チョウサ ケッカ ト ソウカツ

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Lead concentrations were determined in sediment, blue mussel (Mytilus galloprovincialis), seafood, selttling particles, atmospheric deposition, collected from Maizuru Bay, a semi-enclosed marine inlet of the Japan Sea in 2009, in order to elucidate lead contamination levels and distribution. Higher lead concentrations in sediment (824-4, 592ug/g dry) were detected in samples at 200m far from the pollution source. The highest lead concentration in settling particles (1,347ug/g dry) was detected in samples at 60m far from the pollution source. Lead concentrations in blue mussels transplanted from mon-polluted area to polluted area were increased definitely in 2 weeks,lead was not detected in the edible parts of 18 fishes and 2 shellfishes collected in Maizuru Bay. Extremely high lead pollution was kept in about 100m area from the pollution source. Reserch results from 2007-2009 on the lead pollution in Maizuru Bay were summarized.

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