| Underpotential Deposition Study and Determination of Bismuth on Gold Electrode by Using Voltammetry |
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| 引用本文： | 杜永令 王春明. Underpotential Deposition Study and Determination of Bismuth on Gold Electrode by Using Voltammetry[J]. 中国化学, 2002, 20(6): 596-600. DOI: 10.1002/cjoc.20020200614 |
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| 作者姓名： | 杜永令 王春明 |
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| 作者单位： | DepartmentofChemistry,LanzhouUniversity,Lanzhou73000,China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina (No.2 0 0 0 730 17) |
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| 摘 要： | ＴｈｅｃｏｍｂｉｎａｔｉｏｎｏｆｓｔｒｉｐｐｉｎｇｖｏｌｔａｍｍｅｔｒｙｗｉｔｈＵＰＤｃａｎｌｅａｄｔｏｔｈｅｉｍｐｒｏｖｅｍｅｎｔｏｆｓｅｎｓｉｔｉｖｉｔｙ ,ｓｅｌｅｃｔｉｖｉ ｔｙａｎｄｒｅｖｅｒｓｉｂｉｌｉｔｙｆｏｒｅｌｅｃｔｒｏａｎａｌｙｔｉｃａｌｐｕｒｐｏｓｅａｎｄａｖｏｉｄｔｈｅｕｓｅｏｆｔｏｘｉｃｍｅｒｃｕｒｙａｓｔｈｅｗｏｒｋｅｌｅｃｔｒｏｄｅ1ａｎｄｔｈｅｎａｎａｌｙｔｉｃａｌａｐｐｌｉｃａｔｉｏｎｓｈａｖｅｂｅｅｎｄｅｓｃｒｉｂｅｄ .2 4 Ｉｎｔｈｉｓｗｏｒｋ ,ｗｅｄｅｖｅｌｏ…
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| 关 键 词： | 铋 低电位沉积 测定 伏安法 金电极 |
Underpotential Deposition Study and Determination of Bismuth on Gold Electrode by Using Voltammetry |
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| DU,Yong Ling WANG,Chun Ming. Underpotential Deposition Study and Determination of Bismuth on Gold Electrode by Using Voltammetry[J]. Chinese Journal of Chemistry, 2002, 20(6): 596-600. DOI: 10.1002/cjoc.20020200614 |
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| Authors: | DU Yong Ling WANG Chun Ming |
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| Affiliation: | DU,Yong Ling WANG,Chun MingDepartment of Chemistry,Lanzhou University,Lanzhou 730000,China |
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| Abstract: | The cyclic voltammetry (CV) and the semidifferential anodic stripping voltammetry (SdASV) were used for investigation of bismuth(III) underpotential deposition (UPD) on gold electrode. Based on the excellent electrochemical properties of Au/ Bi UPD system, a new method for determining bismuth (III) was established. A solution of 0.1 mol/L HNO3 was selected as the supporting electrolyte. Factors affecting the Bi(III) UPD and stripping steps were investigated and an optimized analytical procedure was developed. The calibration plots for Bi(III) concentration in the range 1.25 × 10?8‐1.0 × 10?7 mol/L were obtained. The detection limit, calculated as three times the standard deviation of the analytical signal of 8.3 × 10?8 mol/L for a 90 s electrodeposition at 0.00 V (while the solution magnetically stirred at a speed of 300 rpm), was 7.5 × 10?9 mol/ L. For 8 successive determinations of 1.25 × 10?7 mol/L Bi(III), the obtained RSD (relative standard deviation) was 0.4%. The developed method was applied to bismuth determining in medicine and urine samples. The analytical results were compared with that of atomic emission spectrometry (AES) method. |
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| Keywords: | bismuth underpotential deposition determination gold disk electrode cyclic voltammetry semidifferential anodic stripping voltammetry |
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