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一、亚铁测定现状长期以来,人们针对亚铁本身极不稳定的性质,拟订出了适合于各种岩石、矿物及其它物料中亚铁(或微量铁)的各种常规分析法,虽然满足了不同要求而达到一定的精确度,但仍难以如实地反映出亚铁的固有含量.对易溶性及难溶性分析对象,沿用例行分析法有“差减法”、“容量法”、“氧化—还原法”等,均可对常量及微量铁(Ⅱ)进行分析.无论采取什么分析法,其分析样的制备、分解及测定过程的每一环节是否能避免亚铁遭受损失则是关键问题.因而,必须采取适当的措施以满足下列各条件.
First, the current status of ferrous determination For a long time, people in view of the very unstable nature of ferrous itself, developed for a variety of rocks, minerals and other materials in the ferrous (or trace iron) of the various conventional analysis, although met Different requirements to achieve a certain degree of accuracy, but it is still difficult to faithfully reflect the inherent content of ferrouss.For soluble and insoluble analysis of objects, follow the routine analysis of the “subtraction”, “capacity”, “oxidation -reduction method ”, etc. The analysis of constant and trace Fe (II) can be carried out regardless of the analytical method used, whether the analytical sample preparation, decomposition and determination of the process can prevent the loss of ferrous iron Therefore, appropriate measures must be taken to satisfy the following conditions.