Research on phosphorus loads and characteristics of adsorption and release in surface sediments of Nanyang Lake and Weishan Lake in China

被引：0
作者：
Shuwu Zhang
Wenchao An
Xiaoming Li
机构：
[1] Qingdao University of Science and Technology,School of Environment and Safety
[2] Qingdao Environmental Monitoring Station,College of Environmental Science and Engineering
[3] Shandong University,undefined
来源：
Environmental Monitoring and Assessment | 2015年 / 187卷
关键词：
Surface sediment; Phosphorus; Adsorption; Release;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The characteristics of phosphate adsorption and the transformation of phosphorus forms in the release process of the sediments in Nanyang Lake and Weishan Lake are researched. Distribution of maximal amount of phosphorus adsorbed (Qmax) is 112.76 and 93.91 mg kg−1, respectively, and the adsorption processes of Nanyang Lake and Weishan Lake reach equilibrium after 48 h. Total maximal amount of phosphorus adsorbed is the amount of Qmax and native adsorbed phosphorus (NAP). The m is the sum of the adsorption efficiency of the sediments adsorbing the phosphorus coming from external sources and the phosphorus desorbed from the sediments. Mutual transformation between phosphorus forms exists in the process of phosphorus release. The contents of NH4Cl-P, BD-P, and HCl-P in the sediments reduced, and the content of NaOH-P increased in the process. But the amount of NaOH-P increased is less than the amount of NH4Cl-P, BD-P, and HCl-P reduced. So other forms of phosphorus transformation relations exist.
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