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本文提出光谱分析增量法的一种计算方案——增量计算法,并应用于黄铁矿中痕量金的测定。用火试金法从硫化矿中提取金是不适宜的,金的损失量高达33％,而用王水法提取损失较小,且简便。提取之金富集于炭粉内,依增量法测定,按推导的计算式求出结果。测定灵敏度5×10~(-6)％,相对标准偏差±8.4％。一、增量计算法原理假定分析线对的波长相近,黑度值S均在正常黑度范围内,则黑度差ΔS与含
In this paper, a calculation method for incremental analysis of spectral analysis - incremental calculation method is proposed and applied to the determination of trace gold in pyrite. It is unsuitable to extract gold from sulphide ore by fire test, the loss of gold is as high as 33%, but the loss with aqua regia is less and the extraction is simple. The extracted gold is enriched in the carbon powder, determined by the incremental method, and calculated according to the derived formula. The sensitivity was 5 × 10 -6%, and the relative standard deviation was ± 8.4%. First, the principle of incremental calculation Assume that the analysis of the line pairs of similar wavelengths, blackness S are in the normal range of black, the blackness difference ΔS with