Behavior of manganese in aqua-benthic environment in the Hiro Bay |
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| Authors: | Shizuko Hirata Osamu Takimura Takayuki Shiozawa |
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| Institution: | (1) Government Industrial Research Institute, Chugoku, 15000, Hiro-machi, 737-01 Kure, Japan |
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| Abstract: | The horizontal and vertical distributions of manganese in sea water, interstitial water and sediments in the Hiro Bay, Seto Inland Sea, Japan, have been investigated. The outflow from a pulp mill is the primary source of manganese in this bay. The industrial waste water contained 0.19 mg l–1 of manganese, mostly in a dissolved form. This manganese diffused out both horizontally and vertically into the surrounding sea water. The content of manganese in the liquid and solid phases in the sediments, however, are inverse with that in the sea water; namely the lowest concentration of manganese in the sediments was observed at the station near the outfall and manganese concentration increased with the distance from the outfall. |
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