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1.本文比较了有钙或无钙存在时地丹黄定镁的不同之点。2.关于钡离子影响镁和地丹黄沉淀色料之颜色的深浅程度,本文作一定量的探讨。3.本文并报告钡离子及钼酸根离子对地丹黄定镁法(含钙溶液)的影响。
1. This article compares the different points of Dan-Huang-Ding-Mag in the presence of calcium or calcium. 2. The effect of barium on the color of magnesium and terrestrial sediment color depth, this paper for a certain amount of discussion. 3. This article also reports the effect of barium ions and molybdate ions on daidanhuang magnesium method (calcium solution).