摘要
选取我国北方典型碱性湖泊查干湖的沉积物为研究对象,在实验室运用水静态模拟方法研究了对于磷含量不同沉积物,在不同解吸时间(t)和不同水土比(W)条件下的解吸动力学过程。结果表明,在一定水土比条件下,沉积物中磷的释放量与解吸时间呈指数关系;在一定的解吸时间条件下,磷的解吸与水土比也呈现指数关系;而在一定的解吸时间和水土比条件下,磷的解析量与沉积物中磷的本底值成正比。通过实验,建立一个简单的解吸动力学模型Pd=0.017P0t0.875 W1.498,可以用来描述低温条件下查干湖沉积物中磷的解吸过程。
Research on the sediment of Chagan Lake, one of the typical alkaline lakes in northern China. Using water static simula- tion method in the laboratory to study the desorption kinetics with the content of phosphorus, desorption time （t） and water/soil ra tios （W）. The results showed that P released was exponentially related to t at any given W, and to W at any given t. The amount of P released was directly proportional to the value of the background in the conditions of some t and W. Through experiments, a sim- ple desorption kinetics model could be created, as Pd =0. 017P0 t0.875W1498 , which be used to describe the process of phosphorus de- sorption in Chagan Lake sediment at low temperature.
出处
《节水灌溉》
北大核心
2013年第6期18-21,共4页
Water Saving Irrigation
基金
国家自然科学基金资助项目(20777027)
关键词
低温
查干湖
磷
解吸动力学
low temperature
Chagan Lake
phosphorus
desorption kinetics
