Journal of Analytical Chemistry

, Volume 60, Issue 11, pp 1062–1068 | Cite as

Use of a Boron-Doped Diamond Electrode for Amperometric Assay of Bromide and Iodide Ions

  • Jing Wu
  • Xiaoli Li
  • Cunxi Lei
  • Xumei Wu
  • Guoli Shen
  • Rugin Yu


The electrochemical assay of bromide and iodide ions at boron-doped diamond (BDD) electrode was investigated by cyclic voltammetry (CV) and chronoamperometry (CA). Comparison experiments were carried out using a glassy carbon (GC) electrode. The BDD electrode exhibited well-resolved and irreversible reduction voltammograms, while the GC electrode provided only an ill-defined response. Cyclic voltammetric signals at BDD electrode for 10 mM Br and I were observed at 561 and 125 mV vs. SCE; the values shifted negatively for 228.7 and 187.5 mV, respectively, compared to those at GC electrode. It was also found that the peak current of Br and I was in direct proportion to the scan rate, which is indicative of a surface confined reduction process. Sensitive amperometric responses for Br and I were obtained covering the linear ranges 0.666 µM–1 mM and 13.3 nM–1 mM, respectively, and their detection limits were 0.53 µM and 1.67 nM, respectively, under the optimum pH and applied potential. The amperometric response was very reproducible and stable with satisfactory recovery results.


Cyclic Voltammetry Glassy Carbon Glassy Carbon Electrode Reduction Process Comparison Experiment 


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Copyright information

© MAIK "Nauka/Interperiodica" 2005

Authors and Affiliations

  • Jing Wu
    • 1
  • Xiaoli Li
    • 1
  • Cunxi Lei
    • 2
  • Xumei Wu
    • 1
  • Guoli Shen
    • 1
  • Rugin Yu
    • 1
  1. 1.Department of Chemistry College of ScienceHuazhong Agricultural UniversityWuhan, HubeiChina
  2. 2.State Key Laboratory of Chemobiosensing and Chemometrics, College of Chemistry and Chemical EngineeringHunan UniversityChangshaChina

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