Quantitative Representation of the Leaching Properties of Chemical Elements
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摘要: 化学元素淋溶性质的研究对于土壤学和风成沉积地球化学的研究具有重要的意义，然而目前的研究还局限在定性描述的水平，同时很多表示的方法和代用参数存在误区。文章主要分析了元素发生化学淋溶的微观过程，通过对兰州市周边地区土壤浸泡、离心分液和离子色谱分析的验证实验，认为大气降水淋岀液中元素的数量与大气降水的量成对数关系，并且给出了确切的函数关系。另外我们得到利用淋溶系数η或λ定量表示元素淋溶性质的方法，该方法可以应用于土壤肥力保持能力的评估和风成沉积地球化学的研究。Abstract: We put great importance to research of leaching behavior of elements in soil science and aeolian sedimentary geochemistry. However, the present study is limited to the level of qualitative description, at the same time, there are many mistakes in the methods and parameters. This paper mainly analyzes the microcosmic process of chemical leaching. we hold the view that it is Logarithmic between the atmospheric precipitation and the poured out elements in liquid. Futhermore, the exact function relation is given. The experimental result of the soil soaking, centrifuging and ion chromatography using the soil surrounding Lanzhou city, also proved the function relation is established. Additionally, we obtained the methods how do a quantitative representation of elements leaching properties by using leaching coefficient η or λ. It may have a important significance on the research of the assessment of soil fertility maintenance capability and aeolian deposition-geochemistry
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Key words:
- geochemistry /
- leaching /
- soil /
- major element /
- quantitative representation
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