铁矿石全铁的测定一直沿用氯化亚锡还原重铬酸钾滴定法.近十多年来,许多国家把它规定为标准分析方法,由于这个方法手续简单、分析周期短也被广泛地用于常规分析中.随着环境保护日益受到重视,人们对这个力法提出了新的问题,即分析过程中使用大量的汞盐,用过的发液排入地下而严重污染环境,直接威胁人们的生命健康.目前,各国冶金、矿山、地质勘探等部门的矿 Determination of iron ore has been used in the determination of stannous chloride reduction of potassium dichromate titration method.For more than a decade, many countries set it as a standard analysis method, due to the simple procedures, short analysis cycle is also widely For routine analysis.With the increasing emphasis on environmental protection, people put forward a new problem on this method, that is, the use of large amounts of mercury salts in the analysis process, used hair liquid discharged into the ground and seriously pollute the environment, a direct threat People’s lives and health.At present, metallurgy, mining, geological exploration and other departments of the mine