镁
滴定法
钙
化学
土壤水分
醋酸铵
锰
铵
无机化学
硫酸铵
环境化学
色谱法
环境科学
土壤科学
有机化学
高效液相色谱法
作者
Harold L. Barrows,Elmer C. Simpson
标识
DOI:10.2136/sssaj1962.03615995002600050012x
摘要
Abstract An EDTA procedure is described for the direct determination of Ca and Mg in soils and plant tissue. These elements are determined in the ammonium acetate leachate of soils and in the 1 N HNO 3 solution of the plant ash. Calcium is separated from Mg by precipitating calcium sulfate from ethanol and is determined in the precipitate. Magnesium is determined in the supernatant solution. Manganese may be present in concentrations likely to interfere with the Mg titration, but this interference is easily eliminated. The accuracy and precision of the method are well within the limits required for routine analyses.
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