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高等学校化学研究 ›› 2001, Vol. 17 ›› Issue (1): 102-107.

• Articles • 上一篇    下一篇

Investigations of Thallium(Ⅰ) Underpotential Deposition on the Silver Rotating Disk Electrode and Its Analytical Application

WANG Chun-ming, ZHU Li   

  1. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
  • 收稿日期:2000-03-01 出版日期:2001-01-24 发布日期:2011-08-04

Investigations of Thallium(Ⅰ) Underpotential Deposition on the Silver Rotating Disk Electrode and Its Analytical Application

WANG Chun-ming, ZHU Li   

  1. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
  • Received:2000-03-01 Online:2001-01-24 Published:2011-08-04

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摘要： The cyclic voltammetry(CV) and the square-wave technique were used for the investigations of thallium(Ⅰ) underpotential deposition(UPD) on the silver electrode. A solution of 10 {mmol/L} HClO4+ 10 mmol/L NaCl was selected as the supporting electrolyte. The calibration plots for Tl(Ⅰ) concentration in the range of 2×10-9—1×10-7 mol/L were obtained. The detection limit was 5×10-10 mol/L. For the solutions of 4.0×10-9 mol/L thallium added before the urine sample pretreatment procedure, the average recovery was 105.6% with a relative standard deviation(RSD) of 15.5%.

关键词: Thallium(Ⅰ), Underpotential deposition, Silver rotating disk electrode, Cyclic voltammetry, Square-wave anodic stripping voltammetry

Abstract: The cyclic voltammetry(CV) and the square-wave technique were used for the investigations of thallium(Ⅰ) underpotential deposition(UPD) on the silver electrode. A solution of 10 {mmol/L} HClO4+ 10 mmol/L NaCl was selected as the supporting electrolyte. The calibration plots for Tl(Ⅰ) concentration in the range of 2×10-9—1×10-7 mol/L were obtained. The detection limit was 5×10-10 mol/L. For the solutions of 4.0×10-9 mol/L thallium added before the urine sample pretreatment procedure, the average recovery was 105.6% with a relative standard deviation(RSD) of 15.5%.

Key words: Thallium(Ⅰ), Underpotential deposition, Silver rotating disk electrode, Cyclic voltammetry, Square-wave anodic stripping voltammetry