Behavior of dissolved manganese in lake ohnuma.

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概要

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• Dissolved manganese concentration in lake and river waters was monitored monthly for a one-year period and found to show significant seasonal changes. In April, the manganese concentration increased about two fold compared to that in river water and decreased almost to zero during the summer months. Laboratory studies revealed that such a seasonal change was due to redissolution of manganese from suspended matter (primary source from lake sediments) generated through wind mixing of the lake water in April and manganese re-adsorption on suspended matter (primarily from dead plankton) during the summer months. Manganese adsorbed on suspended matter is slightly oxidized to Mn (III) or Mn (IV).

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日本陸水学会 | 論文

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