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| Effects of arsenic and organic matter on the speciation of phosphorus in the sediments of Yangzonghai lakeside wetland |
| Received:March 08, 2016 |
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| KeyWord:Yangzonghai lakeside wetland, sediments, arsenic and phosphorus, speciation of inorganic phosphorus |
| Author Name | Affiliation | E-mail | | LI Meng-ying | College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China | | | ZHENG Yi | College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China | zhengyi@swfu.edu.cn | | LIU Yun-gen | College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China
Research Institute of Rural Sewage Treatment, Southwest Forestry University, Kunming 650224, China | | | HOU Lei | College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China
Research Institute of Rural Sewage Treatment, Southwest Forestry University, Kunming 650224, China | | | WANG Yan | College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China
Research Institute of Rural Sewage Treatment, Southwest Forestry University, Kunming 650224, China | | | LIANG Qi-bin | College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224, China
Research Institute of Rural Sewage Treatment, Southwest Forestry University, Kunming 650224, China | |
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| Abstract: |
| Yangzonghai lakeside wetland located in Yunnan Province was selected as the research object, and sediment samples were collected. The contents and distribution characteristics of total arsenic(TAs), total phosphorus(TP) and each speciation of inorganic phosphorus of these samples were determined, and the correlation analyses between contents of arsenic and organic matter(OM) and each speciation of phosphorus were conducted. It was found that the contents of TAs in the sediments were near the level Ⅲ value of environmental quality standard for soils, whereas that of TP in the sediments were affected by the manners of upstream human disturbance and the contents of TP in the sampling belt under the comprehensive disturbance of farmland and village showed the highest values. The contents of TAs and TP showed significant accumulation in the surface layer of sediment, and reduction effects both of arsenic and phosphorus could be noticed by lakeside wetland. Ca10-P was the dominant component among all the speciation of inorganic phosphorus, whereas the contents of the rest speciation of phosphorus(including active Ca2-P and Ca8-P, potential-release Al-P and Fe-P, inert O-P) were relatively lower. Both of the contents of arsenic and OM in the sediments had marked effects on the speciation of phosphorus, which was related to the competition effects of adsorption to the sediments between arsenic and phosphorus and also the changes of environmental factors. These results could provide a scientific basis for the prevention and management of Yangzonghai Lake pollution. |
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