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研究了在硼砂 -氢氧化钠介质中 ,钴 ( )催化过氧化氢氧化偶氮氯膦 的褪色反应及其动力学条件。测钴 ( )范围 0～ 0 .6μg/1 0 m L,检出限为 7.2 6× 1 0 - 1 2 g/m L,可测定中药中微量钴 ,采用巯基葡聚糖凝胶分离富集 ,可用于多种样品中微量钴的测定 ,结果令人满意。
In the borax - sodium hydroxide medium, cobalt () catalyzed hydrogen peroxide oxidation of chlorophosphonazo color reaction and its kinetic conditions. The detection limit of Co (superscript 2 +) was 0 ~ 0.6μg / 1 0 m L with the detection limit of 7.2 6 × 10 ~ 12 g / m L. The trace cobalt in Chinese medicine could be determined and separated by enrichment with mercapto-dextran gel , Can be used for a variety of samples in the determination of trace cobalt, the results are satisfactory.