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以氯化亚锡为还原剂的经典重铬酸钾容量法,在测定过程中为消除稍过量的氯化亚锡所加入的氯化高汞,污染环境,造成公害。为了消除剧毒汞盐的污染,我们采用银柱还原高价铁的分析方法(以下称银柱还原法)。通过比较系统的试验证明,本法准确、快速、简便,不仅可适用于磷矿分析,而且也适用于铁矿石、硫铁矿、钾长石和肥料等试样中铁含量的测定,实为目前消除汞盐污染比较成功的分析方法之一。
The classic potassium dichromate volumetric method using stannous chloride as a reductant can pollute the environment and eliminate pollution due to the elimination of a slight excess of stannous chloride in the process of determination. In order to eliminate toxic mercury salts pollution, we use silver column reduction of high-priced iron analysis (hereinafter referred to as silver reduction). Through comparative systematic tests, this method is accurate, rapid and simple, not only applicable to phosphate rock analysis, but also suitable for the determination of iron content in iron ore, pyrite, potassium feldspar and fertilizers and other samples. One of the more successful analytical methods to eliminate mercury salt pollution.