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土壤全量常规分析中,脱硅后的待测液可用EDTA滴定法进行铁、钛、铝等元素的连续滴定。实验表明,只要控制测定中各元素所需酸度,利用各元素与EDTA形成配合物稳性性不同,就能使土壤农化分析测定铁、钛、铝方法简单、快速、准确。
In the routine analysis of soil total amount, titration of iron, titanium, aluminum and other elements by EDTA titration can be carried out continuously for the test solution after desiliconization. Experiments show that as long as the determination of the required acidity of the various elements of the assay, the use of various elements and EDTA complex stability of different formulations, can make the determination of soil agro-analysis of iron, titanium, aluminum method is simple, fast and accurate.