摘要
应用同位素 ( 32 P)示踪法 ,对陕西省四种土壤中磷素运移动力学特征进行研究得出 :( 1 )提出溶质运移动力学研究命题具有必要性和实际意义 ;有助于进一步对溶质运移机理进行探讨 ;( 2 )将过渡态理论移植到磷运移动力学中加以应用是可行的 ,所求出的磷运移活化能 (E y)和假热力学参数———活化焓(△H y)、活化自由能 (△G y)和活化熵 (△S y)可从不同的角度反映出磷运移过程中的能量变化 。
The experiments were conducted by using an isotopic tracer technique ( 32 P) to investigate P transport kinetics in four types of soils with three different treatments (air dried soil, air dried soil after eliminating CaCO 3, and undisturbed soil). The proposition of solte transport kinetics should be used with care if someone wants to go inside into the mechanisms of solute transport. In addition, it is feasible to apply the transition theory for the study of phosphorus transport kinetics, and then the pseudo thermodynamic parameters can reflect energy characters of phosphorus transport from diffenent aspects.
出处
《土壤通报》
CAS
CSCD
北大核心
2000年第6期244-247,共4页
Chinese Journal of Soil Science
关键词
溶质运移动力学
能量特征
土壤磷吸附
Solute transport kinetics
Transition theory
Pseudo thermodynamic
