ISO 7990:1985 锰矿石和锰精矿.铁的总含量的测定.还原后的滴定法和磺基水杨酸分光光度计法

标准编号：ISO 7990:1985

中文名称：锰矿石和锰精矿.铁的总含量的测定.还原后的滴定法和磺基水杨酸分光光度计法

英文名称：Manganese ores and concentrates — Determination of total iron content — Titrimetric method after reduction and sulfosalicylic acid spectrophotometric method

发布日期：1985-12

标准范围

方法A适用于总铁含量为1%至25%（m/m）的产品，方法B适用于总铁含量为0.2%至2%（m/m）的产品。ISO 7990应与ISO 4297一起阅读。详细说明原理、反应（仅方法A）、试剂、仪器、取样和样品、程序和结果表达。

Method A is applicable to products having a total iron content from 1 to 25 % (m/m), and method B is applicable to products having a total iron content from 0.2 to 2 % (m/m). ISO 7990 should be read in conjunction with ISO 4297. Specifies principle, reactions (method A only), reagents, apparatus, sampling and samples, procedure and expression of results.

标准预览图