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文献[1]指出,在乙酸盐缓冲液介质中(pH=4.5～5.0),三氯甲烷、四氯化碳能定量萃取锡与铜试剂的络合物,但用于钨基体锡的萃取分离时,在萃取酸度下,钨易形成钨酸而影响操作、使之不能定量萃取锡。本文介绍了酮类、酯类及环已烷对钨中锡的萃取效果。以乙酸丁酯、环己烷为萃取剂,以镍为共萃取剂,能达到一次定量萃取0.5—5微克锡与主体
[1] pointed out that chloroform and carbon tetrachloride can quantitatively extract the complex of tin and copper reagent in the acetate buffer solution (pH = 4.5 ~ 5.0), but the extraction of tin from tungsten matrix Separation, the extraction of acidity, tungsten easily form tungstic acid and affect the operation, so that it can not quantitative extraction of tin. This article describes the effects of ketones, esters and cyclohexane on the extraction of tin from tungsten. With butyl acetate, cyclohexane as extractant and nickel as coextractant, it can achieve a time quantitative extraction of 0.5-5 micrograms tin and the main body