Environmental Science
8 years ago

Poor pH Control in Lakes Leads to Dangerous Phosphorus Release

Journal of Environmental Science and Health Part A
Origins and Mobility of Phosphorus Forms in the Sediments of Lakes Taihu and Chaohu, China
Qinghui Huang, Zijian Wang, Donghong Wang, Chunxia Wang, Mei Ma, Xiangcan Jin

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Phosphorus release from lake sediments can cause eutrophication. Sediment samples from Lakes Taihu and Chaohu in China were studied to understand phosphorus forms. Results showed that Fe/Al-bound phosphorus and organic phosphorus were linked to amorphous Fe/Al oxides and organic matter. Calcium-bound phosphorus was related to total organic carbon. Higher pH led to the release of Fe/Al-bound phosphorus and increased Ca-bound phosphorus due to calcium carbonate formation. External phosphorus inputs affect phosphorus distribution in the lakes. pH plays a crucial role in phosphorus mobility in the sediments of these lakes.