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微量銻的测定在寻找有色金属及貴金属硫化物矿床时有一定的地貭意义,因为它可以作为一个原生矿或伴生矿物的指示元素。銻的光譜分析灵敏度为n×10~(-2)％,根据В.И.納尔納茨基和А.П.維诺格拉多夫的材料,銻在岩石及土壤中的平均含量約在1×10~(-5)-4×10~(-5)％之間,所以我在工作中試驗出了一个灵敏的快速測定銻的方法。一、提示:在含有6N盐酸的亚硝酸钠溶液中,三价銻被氧化而轉变成鉻阴离子[SbCl_6]~-,此铬阴离子在2.9N的盐酸溶液中,与甲基紫形成稳定的蓝色鉻合物,此有色鉻合物能很好地被甲苯萃取出来,在
Determination of trace amounts of antimony in the search for non-ferrous metal and precious metal sulfide deposits have a certain meaning, because it can be used as an indicator of primary ore or associated minerals. Antimony spectral analysis sensitivity of n × 10 ~ (-2)%, according to В.И. Narnatsky and А.П. Vinogradov material, antimony in rock and soil average content of about 1 × 10 ~ (-5) -4 × 10 ~ (-5)%, so I tested a sensitive method for rapid determination of antimony at work. Tip: In 6N hydrochloric acid solution of sodium nitrite, trivalent antimony is oxidized and converted into chromium anion [SbCl_6] ~ -, the chromium anion in 2.9N hydrochloric acid solution, with the formation of methyl violet stable Blue chrome, this chrome complex can be well extracted by toluene, at