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本文研究了在pH4.0—5.0的缓冲溶液中钴(Ⅱ)催化过氧化氢氧化氯磺酚S的褪色反应及其动力学条件,建立了测定痕量钴的新方法,测定钴的范围为0—0.06μg/25mL,其检出限为6.45×10~(-12)gCo/mL,用于测定中药材中的痕量钴,获得满意结果。
In this paper, the bleaching reaction and kinetic conditions of cobalt (Ⅱ) -oxidation of chlorosulfonates S catalyzed by cobalt (Ⅱ) in buffer solution at pH 4.0-5.0 were studied. A new method for the determination of trace cobalt was established. The range of cobalt The detection limit was 6.45 × 10 ~ (-12) gCo / mL for the determination of trace amounts of cobalt in Chinese herbal medicines, and satisfactory results were obtained.