| 示波极谱法测定中草药中痕量钴的研究 |
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| 引用本文： | 杜芳艳. 示波极谱法测定中草药中痕量钴的研究[J]. 河北科技大学学报, 2007, 28(1): 26-28 |
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| 作者姓名： | 杜芳艳 |
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| 作者单位： | 榆林学院化学与化工学院,陕西榆林,719000 |
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| 摘 要： | 钴(Ⅱ)与3-噻唑偶氮-5-氨基苯酚在pH值为8.0的硼砂-盐酸缓冲溶液中的反应有一灵敏的极谱络合吸附波,其峰电位在-0.74 V左右,钴质量浓度在0.001~1.4μg.mL-1范围内与二次导数峰电流呈线性关系,检出限为0.000 5μg.mL-1。对电极反应机理进行了探讨,所拟方法适用于中草药中钴含量的测定。
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| 关 键 词： | 示波极谱法 钴(Ⅱ) 3-噻唑偶氮-5-氨基苯酚(3-TAP) 中草药 |
| 文章编号： | 1008-1542（2007）01-0026-03 |
| 收稿时间： | 2006-01-05 |
| 修稿时间： | 2006-01-05 |
Study on detemination of trace cobalt in Chinese herbal medicines by oscillopolarography |
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| DU Fang-yan. Study on detemination of trace cobalt in Chinese herbal medicines by oscillopolarography[J]. Journal of Hebei University of Science and Technology, 2007, 28(1): 26-28 |
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| Authors: | DU Fang-yan |
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| Affiliation: | Chemistry and Chemical Engineering College, Yulin College, Yulin Shaanxi 719000, China |
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| Abstract: | In a Na2B4O7-HCl buffer solution of pH 8.0,cobalt(Ⅱ) reacts with 3-thiazolylazo-5-amino phenol and the reaction produces a sensitive polarograph adsorptive complex wave at the potential of-0.74 V.The second-order derivative peak current of the wave is linearly proportional to cobalt mass concentration in the range of 0.001~1.4 μg·mL-1.The detection limit is 0.000 5 μg·mL-1.The proposed method can be used to determine trace cobalt in Chinese herbar medicines. |
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| Keywords: | oscillopolarography cobalt(Ⅱ) 3-thiazoly lazo-5-aminophenol(3-TAP) Chinese herbal medicine |
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