| DL-精氨酸/石墨烯修饰电极测定铅 |
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| 引用本文： | 解文静.DL-精氨酸/石墨烯修饰电极测定铅[J].广州化工,2014(2):88-89,123. |
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| 作者姓名： | 解文静 |
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| 作者单位： | 齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161000 |
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| 摘 要： | 用循环伏安法制备DL-精氨酸/石墨烯修饰玻碳电极,研究金属铅在修饰电极上的电化学行为。在0.1 mol/L pH=4.5的NaAc-HAc缓冲液中,以DL-精氨酸/石墨烯修饰电极作为工作电极,用循环伏安法测定-1.0~1.0 V处的溶出峰电流。实验结果显示:铅的浓度与溶出峰电流具有良好的线性关系,范围是3.0×10-9~9.0×10-7mol/L,检测限为1.0×10-10mol/L,用于测定金属结果满意。
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| 关 键 词： | DL-精氨酸 修饰电极 铅离子 循环伏安法 |
DL- Arginine/Graphene Modified Electrode Used in the Determination of Lead Content |
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| Affiliation: | XIE Wen-ring ( Institute of Chemistry and Chemical Engineering, Qiqihar University, Heilongjiang Qiqihaer 161000, China) |
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| Abstract: | The DL- Arginine/Graphene modified glassy carbon electrode was prepared by cyclic vohammetry method. Meanwhile, the electrochemical behavior of metal lead ion on the electrode was studied. In the 0. 1 mol/L and pH =4.5 NaAc -HAc buffer solution, the modified electrode was used as working electrode to determine the stripping peak current at - 1 - 1 V by cyclic vohammetry method. The result showed that the concentration of lead ion and the stripping peak current were good linear relationship in the concentration range from 3.0× 10^ -9 mol/L to 9. 0 × 10^ -7 mog/L, and the detection limit was 1.0 × 10^-l0 mol/L. The prepared electrode showed satisfactory results in metal lead ion determination. |
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| Keywords: | DL - Arginine modified electrode Pb^2 ＋ cyclic vohammetry |
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