| 电分析法检测药物中铋（Ⅲ）的含量 |
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| 引用本文： | 刘赵荣,弓巧娟,张稳婵,孟莉新.电分析法检测药物中铋（Ⅲ）的含量[J].运城学院学报,2011(5):39-41,63. |
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| 作者姓名： | 刘赵荣 弓巧娟 张稳婵 孟莉新 |
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| 作者单位： | 运城学院应用化学系,山西运城,044000 |
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| 基金项目： | 基金项目:山西省高校科技开发项目，运城学院博士启动基金 |
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| 摘 要： | 研究了Bi^3＋在碳糊电极上的阳极溶出伏安特性，结果表明：在1．0mol·L^-1的HCl溶液中，于-0．055V处出现一灵敏的溶出峰，电极反应过程是受吸附控制的电极过程。并考察了测定Bi^3＋的最优化条件，在1．0mol·L^-1的HCl溶液中，于0．4V富集80s后，以120mV／s扫描速度进行测定，结果表明：在1．0×10^-7-1．0×10^-4mol·L^-1浓度范围内，Bi^3＋的溶出峰电流Ip与其呈良好的线性关系，检出限为6．0×10^-8mol·L^-1（信噪比RSN=3）。将该法应用于药物中铋含量的测定，回收率在99—102％，结果令人满意。
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| 关 键 词： | Bi3＋ 阳极溶出伏安法 药物 |
Determination of Bismuth in drugs by electrochemistry method |
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| LIU Zhao-rong,GONG Qiao-juan,ZHANG Wen-chan,MENG Li-xin.Determination of Bismuth in drugs by electrochemistry method[J].JOURNAL OF YUNCHENG UNIVERSITY,2011(5):39-41,63. |
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| Authors: | LIU Zhao-rong GONG Qiao-juan ZHANG Wen-chan MENG Li-xin |
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| Institution: | LIU Zhao-rong,GONG Qiao-juan,ZHANG Wen-chan,MENG Li-xin (Department of Applied Chemistry,Yuncheng University,Yuncheng 044000,China) |
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| Abstract: | The anodic stripping volt - ampere characteristic of Bi^3 ＋ on the carbon paste electrode was studied. The results show that there is a well defined stripping peak at -0.055V in the HCl solution（ 1.0mol L^-1）, and the electrode reaction is an adsorptioncontrolled process. In addition, we investigated the optimal condition of detecting Bi^3＋ . The performance was carried at the scan rate of 120mV/s in the HCI solution （ 1.0mol L^-1 ） after accumulating tbr 80s at 0.4V. The results show the calibration curve was linear in the Bi^3 ＋ concentration range of 1.0 × 10^-7 - 1.0×10 4 mol · L^-1 with a detection limit of 6.0 × 10 ^-8mol L 1 （ RsN = 3）. When the proposed method was applied in determining the content of Bi^3 ＋ in drugs, the results were satisfactory for that the recove was at 99% - 102%. |
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| Keywords: | carbon paste electrode Bi34 anodic stripping vohammetry drug |
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