ISO 2482:1973 工业用氯化钠.钙和镁含量的测定.乙二胺四乙酸(EDTA)络合滴定法
标准编号:ISO 2482:1973
中文名称:工业用氯化钠.钙和镁含量的测定.乙二胺四乙酸(EDTA)络合滴定法
英文名称:Sodium chloride for industrial use — Determination of calcium and magnesium contents — EDTA complexometric methods
发布日期:1973-02
标准范围
本方法适用于含量大于0001%(m/m)的水溶性盐。在特殊情况下,可以测定在酸性介质中制备的主溶液中的离子。其原理包括溶解试验部分和分离不溶物。分别以乙二醛双-(2-羟基苯胺)(GBHA)和媒介黑11(Cl 14645)为指示剂,使用乙二胺四乙酸二钠(EDTA)滴定根据ISO 2479获得的滤液。
The method is applicable to water-soluble salts for contents greater than 0,001 % (m/m). In a special case, the determination of ions in a principal solution prepared in an acid medium is pooible. The principle consists in dissolution of a test portion and separation of insoluble matter. Titration of the filtrate obtained according to ISO 2479 using disodium ethylendiamintetraacetate (EDTA) in the presence of glyoxal-bis-(2-hydroxyanil) (GBHA) and mordant black 11 (Cl 14645) respectively as indicators.
标准预览图


