VOLTAMMETRIC AND POTENTIOMETRIC BEHAVIOR OF 2-PYRIDINETHIOL, 2-MERCAPTOETHANOL AND SULFIDE AT IRON(II) PHTHALOCYANINE MODIFIED CARBON-PASTE ELECTRODE

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AMINI M.K.; SHAHROKHIAN S.; TANGESTANINEZHAD S.; MOHAINMADPOOR BALTORK I.

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Journal Paper

Paper Information

Journal: Iranian Journal of Chemistry and Chemical Engineering Year:2001 | Volume:20 | Issue:1 Page(s): 29-36

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Title

VOLTAMMETRIC AND POTENTIOMETRIC BEHAVIOR OF 2-PYRIDINETHIOL, 2-MERCAPTOETHANOL AND SULFIDE AT IRON(II) PHTHALOCYANINE MODIFIED CARBON-PASTE ELECTRODE

Author(s)

AMINI M.K. | SHAHROKHIAN S. | TANGESTANINEZHAD S. | MOHAINMADPOOR BALTORK I. | Issue Writer Certificate

Keywords

IRON PHTHALOCYANINE

; MODIFIED ELECTRODES

POTENTIOMETRY

ELECTROCATALYSIS

2-PYRIDINETHIOL

2-MERCAPTOETHANOL

SULFIDE

Abstract

A carbon-paste electrode modified with iron (II) phthalocyanine (FePc) was used as a sensitive potentiometric sensor for determination of 2-PYRIDINETHIOL (2PT), 2-MERCAPTOETHANOL (2ME) and SULFIDE ion in aqueous solutions. The modified electrode acts as an electrocatalyst for oxidation of these compounds, and lowers the overpotential for oxidation reactions by more than 400 mV, compared to the unmodified electrode. The process was dependent on the pH of the supporting electrolyte. The fast rate of electron transfer results in a near-Nernstian behavior of the modified electrode, and makes it a suitable potentiometric sensor for measurement of these compounds. Calibration studies were performed using POTENTIOMETRY in oxygen or air saturated stirred solutions; linear responses were obtained over the range of about 1x10-6 to 5x10-3 M (correlation coefficients, r, of similar 0.999, n=8). The modified electrode exhibited a fast response time (< 20 s), good stability, and had an extended lifetime; the standard deviation of slopes, during a period of two months, was 1.7-2.4% (n=10). Appropriate electrochemical and analytical data are presented.

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APA: Copy

AMINI, M.K., SHAHROKHIAN, S., TANGESTANINEZHAD, S., & MOHAINMADPOOR BALTORK, I.. (2001). VOLTAMMETRIC AND POTENTIOMETRIC BEHAVIOR OF 2-PYRIDINETHIOL, 2-MERCAPTOETHANOL AND SULFIDE AT IRON(II) PHTHALOCYANINE MODIFIED CARBON-PASTE ELECTRODE. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), 20(1), 29-36. SID. https://sid.ir/paper/528377/en

Vancouver: Copy

AMINI M.K., SHAHROKHIAN S., TANGESTANINEZHAD S., MOHAINMADPOOR BALTORK I.. VOLTAMMETRIC AND POTENTIOMETRIC BEHAVIOR OF 2-PYRIDINETHIOL, 2-MERCAPTOETHANOL AND SULFIDE AT IRON(II) PHTHALOCYANINE MODIFIED CARBON-PASTE ELECTRODE. IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)[Internet]. 2001;20(1):29-36. Available from: https://sid.ir/paper/528377/en

IEEE: Copy

M.K. AMINI, S. SHAHROKHIAN, S. TANGESTANINEZHAD, and I. MOHAINMADPOOR BALTORK, “VOLTAMMETRIC AND POTENTIOMETRIC BEHAVIOR OF 2-PYRIDINETHIOL, 2-MERCAPTOETHANOL AND SULFIDE AT IRON(II) PHTHALOCYANINE MODIFIED CARBON-PASTE ELECTRODE,” IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE), vol. 20, no. 1, pp. 29–36, 2001, [Online]. Available: https://sid.ir/paper/528377/en

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