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Phosphorus speciation and effects of environmental factors on release of phosphorus from sediments obtained from Taihu Lake, Tien Lake, and East Lake
Liang, Zhen1,3; Liu, Zhimei2; Zhen, Shuming1; He, Rong1
2015-04-21
摘要Phosphorus is considered the primary nutrient limiting eutrophication. The release of phosphorus from sediments not only provides hydrophytes with essential nutrients, but can also produce entrophication in lakes. In this study, the sediment characteristics, phosphorus speciation, and environmental factors affecting phosphorus release from sediments from Taihu Lake, Tien Lake, and East Lake were investigated. The results indicated that phosphorus levels of sediments ranged from 647 +/- 67 to 2343 +/- 122 mg/kg. Inorganic phosphorus comprised the majority of total phosphorus. The main phosphorus speciation of sediments obtained from Taihu Lake and Tien Lake was Residual-P, and the main phosphorus speciation of sediment obtained from East Lake was NaOH-P. Phosphorus release occurred in acidic and alkaline conditions but more frequently under alkaline conditions. The amount of phosphorus released from the sediments increased as the disturbing intensity rose. In addition, less phosphorus was released in natural than anaerobic conditions. The amount of phosphorus released was elevated as temperature increased.
关键词environmental factors release phosphorus speciation sediment characteristics
DOI10.1080/02772248.2015.1050186
发表期刊TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY
ISSN0277-2248
卷号97期号:3-4页码:335-348
通讯作者Liu, ZM (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China.
收录类别SCI
WOS记录号WOS:000358155700007
语种英语