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目前,测定含金(铊)矿石中的锑,无论是碱性染料法或是碘化钾-罗丹明B(6G)-聚乙烯醇法,都相当程度的受金、铊的干扰,即使加入大量的掩蔽剂也无法消除。本文是藉助于纸层析法将金、铊分离,然后用孔雀绿显色分光光度法测定含金(铊)矿石中的锑。经实验表明,在此条件下,金80μg、铊100μg不干扰测定,方法回收率在90％以上,变动系数为5.5％左右,测定范围为0.0x-x.0％。 (一)分析手续称取0.5000g试样于100ml的烧杯中,用水润湿后加盐酸和磷酸混酸(4:1)15Ml,加热煮沸溶解后定
At present, the determination of antimony in the gold (thallium) ores, both basic dye method and potassium iodide-rhodamine B (6G) -polyvinyl alcohol method, is considerably affected by the interference of gold and thallium even if a large amount of Masking agents can not be eliminated. In this paper, gold and thallium are separated by paper chromatography, and then the antimony in the gold (thallium) ores is determined by the malachite green color spectrophotometry. Experiments show that under these conditions, gold 80μg, thallium 100μg does not interfere with the determination, the method recovery rate of 90% or more, the coefficient of variation of about 5.5%, the determination range of 0.0x-x%. (A) analysis procedures Weigh 0.5000g sample in a 100ml beaker, wet with water and then add hydrochloric acid and phosphoric acid mixed acid (4: 1) 15Ml, heated to boil dissolved