DOI QR코드

DOI QR Code

Determination of Ag(I) at a Chemically Modified Electrode Based on 2-Imino-cyclopentane-dithiocarboxylic Acid

  • Jeong-Sik Yeom (Department of Chemistry, College of Natural Science, Pusan National University) ;
  • Mi-Sook Won (Department of Chemistry, College of Natural Science, Pusan National University) ;
  • Sung-Nak Choi (Department of Chemistry, College of Natural Science, Pusan National University) ;
  • Yoon-Bo Shim (Department of Chemistry, College of Natural Science, Pusan National University)
  • 발행 : 1990.06.20

초록

Chemically modified electrodes(CMEs), based on 2-imino-1-cyclopentane-dithiocarboxylic acid (icdc) containing carbon paste, have been characterized using cyclic voltammetric techniques. Ag(I) was chemically deposited on the CMEs, and voltammograms were obtained with the electrode in a separate buffer solution. The CME surface can be regenerated with exposure to acid and reused for deposition. In 10 deposition/measurement/regenerate cycles, the linear response have been reproduced up to $1{\times}10^{-6}$ M in linear sweep voltammetry and 1${\times}$10-8 M in differential pulse voltammetry with relative standard deviation of 5.2% and 12.4%, respectiveiy. The sensitivity increased with deposition time and scanning rate, and detection limit was $1{\times}10^{-7}M\;and\;1{\times}10^{-9}M$ at 20 minutes deposition in the linear sweep voltammetry and differential pulse voltammetry, respectively. The presence of some metal ions does not influence the silver ion response. Satisfactory results were obtained for the analysis of the silver ion for a variety of reference materials without interference of Hg ion at the condition of pH = 5-6.

키워드

피인용 문헌

  1. Determination of copper(I) ion with a chemically modified carbon paste electrode based on di(2-imino-cyclopentylidine mercaptomethyl) disulfide vol.5, pp.5, 1990, https://doi.org/10.1002/elan.1140050508
  2. Simultaneous determination of lead, copper, and mercury at a modified carbon paste eletrode containing humic acid vol.6, pp.10, 1994, https://doi.org/10.1002/elan.1140061014
  3. Sensors based on carbon paste in electrochemical analysis: A review with particular emphasis on the period 1990-1993 vol.7, pp.1, 1990, https://doi.org/10.1002/elan.1140070103
  4. Determination of mercury and silver at a modified carbon paste electrode containing glyoxal bis(2-hydroxyanil) vol.7, pp.12, 1995, https://doi.org/10.1002/elan.1140071214
  5. Anodic differential pulse voltammetric analysis of iodide with a cinchonine-modified carbon paste electrode vol.8, pp.7, 1990, https://doi.org/10.1002/elan.1140080715
  6. Determination of Ag(Ⅰ) Ion at a Modified Carbon Paste Electrode Containing N,N'-Diphenyl Oxamide vol.24, pp.7, 1990, https://doi.org/10.5012/bkcs.2003.24.7.948