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火试金法在分析领域中是最古老的方法,作为粗金分析,是从金的精练方法上发展的.金的灰吹法,可能已有2500年的历史,分金法在中古世纪,是用铜或铁的硫酸盐(胆矾或绿矾),或矾油(即硫酸),与食盐对粗金在高温下反应,银及贱金属成为氯化物吸收在砖粉中.12世纪开始用硫化法分金.15世纪开始用硝酸分金.这些技术先后用于试金分析.随着生产技术的发展,硝酸或硫酸分金和19世纪四十年代出现的氯化法,使商品金
Fire test method in the field of analysis is the oldest method, as the crude gold analysis is refined method of gold developed.Gold ash blowing method, may have 2500 years of history, the gold age method in the Middle Ages, is With copper or iron sulfate (cholesta or vitriol), or alum oil (ie, sulfuric acid), and salt on the crude gold reaction at high temperatures, silver and base metals into chloride absorption in brick powder in the 12th century Vulcanization method of gold .15 century began to use gold nitrate .This technology has been used for gold assay.With the development of production technology, nitric acid or sulfuric acid gold and the 1940s appeared in the chlorination method, so that gold