ISO 6382:1981 测定硅含量的一般方法.还原钼硅酸盐的分光光度计法

标准编号:ISO 6382:1981

中文名称:测定硅含量的一般方法.还原钼硅酸盐的分光光度计法

英文名称:General method for determination of silicon content — Reduced molybdosilicate spectrophotometric method

发布日期:1981-11

标准范围

规定了一种基于任何聚合二氧化硅解聚的方法,即在盐酸存在下用氟化钠处理,从而形成氧化钼硅酸盐,然后在草酸存在下和硫酸介质中选择性还原该络合物,以及在对应于最大吸收(约800 nm)的波长处对蓝色络合物进行分光光度测量。

Specifies a method based on the depolymerization of any polymerized silica by treatment with sodium fluoride in the presence of hydrochloride acid resulting in the formation of the oxidized molycdosilicate, followed by the selective reduction of this complex in the presence of oxalic acid and in a sulphuric acid medium, and spectrophotometric measurement of the blue-coloured complex at the wavelength corresponding to maximum absorption (about 800 nm).

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