Study on the photochemical reaction of manganese in seawater

YANG Gui-peng; WANG Yu-jue; HU Li-ge; HOU Hai-jun

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YANG Gui-peng, WANG Yu-jue, HU Li-ge, HOU Hai-jun. Study on the photochemical reaction of manganese in seawater[J]. Haiyang Xuebao, 2007, 29(3): 69-75.

Citation:

YANG Gui-peng, WANG Yu-jue, HU Li-ge, HOU Hai-jun. Study on the photochemical reaction of manganese in seawater[J]. Haiyang Xuebao, 2007, 29(3): 69-75.

YANG Gui-peng, WANG Yu-jue, HU Li-ge, HOU Hai-jun. Study on the photochemical reaction of manganese in seawater[J]. Haiyang Xuebao, 2007, 29(3): 69-75.

Citation:

YANG Gui-peng, WANG Yu-jue, HU Li-ge, HOU Hai-jun. Study on the photochemical reaction of manganese in seawater[J]. Haiyang Xuebao, 2007, 29(3): 69-75.

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Study on the photochemical reaction of manganese in seawater

1.
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
2.
Environmental Science Research Center, Xiamen University, Xiamen 361005, China

Received Date: 2006-08-08
Rev Recd Date: 2006-12-08

Abstract

Abstract

The photochemical reaction of manganese in seawater and its influencing factors were studied.The result indicated that the phot ochemical reduction of manganese occurred mainly via dissolved or ganic substances.The changes in the kinds as well as concentrations of organic substances could change the photoreaction rate of manganese in the solution.The increase in light intensity would be propitious to the photo reduction reaction of manganese.The decrease in the pH value of system could enhance the photoreaction rate of manganese.The photoreaction rates of manganese in different media were in the following sequence: deioned water > artificial seawater > natural seawater.Furthermore,the stirring action was necessary for the occurrence of the photoreaction of manganese.However,change in the stirring rate would produce little effect on the photoreaction rate of manganese after the system reached the even state.Our study showed that the photoreductive reaction of manganese in seawater could enhance the biological uptake of dissolved Mn(Ⅱ) and promote the algal growth.
- manganese,
- photoreaction,
- influencing factors,
- seawater

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References(17)

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