SILICA-MODIFIED CARBON PASTE ELECTRODE FOR DETERMINATION OF PYROGALLOL

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QADERIZADEH S.M.; TASHKHOURIAN J.

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Seminar Paper

Paper Information

Seminar: IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR
Year:2012 | Issue:10

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Title

SILICA-MODIFIED CARBON PASTE ELECTRODE FOR DETERMINATION OF PYROGALLOL

Author(s)

QADERIZADEH S.M. | TASHKHOURIAN J.

Keywords

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Abstract

PYROGALLOL (1, 2, 3-TRIHYDROXYBENZENE) IS ONE KIND OF NATURAL PHENOLIC COMPOUND THAT IS ALSO AN ACTIVE INGREDIENT IN MANY INDUSTRIES SUCH AS PHARMACEUTICALS, COSMETICS AND PLASTICS. THEREFORE, PYROGALLOL IS COMMONLY FOUND IN INDUSTRIAL EFFLUENTS AND EASILY INTRODUCED INTO THE LIVING ENVIRONMENT. THE DETERMINATION OF PYROGALLOL HAS BEEN EXTENSIVELY STUDIED DUE TO THE INHERENT TOXICITY AND ENVIRONMENT THREAT. [1] SILICA PRESENTS ATTRACTIVE PROPERTIES (ADSORPTION CAPACITY, ACID/BASE CHEMISTRY, THERMAL STABILITY) WHICH COULD BE ADVANTAGEOUSLY EXPLOITED, FOR EXAMPLE IN THE ACCUMULATION OF ELECTROACTIVE ANALYTES BEFORE THEIR ELECTROCHEMICAL DETECTION [2]. MODIFIED CARBON PASTE ELECTRODES (MCPE) ARE COMMONLY EMPLOYED IN ELECTROCHEMICAL APPLICATIONS DUE TO THEIR EXCELLENT PROPERTIES. RECENTLY, SILICA MODIFIED ELECTRODES HAVE BEEN DEVELOPED FOR VARIOUS ANALYTES [3]. IN THIS WORK CARBON PASTE ELECTRODES (CPE) MODIFIED WITH SIO2 WERE USED FOR THE SENSITIVE ELECTROCHEMICAL DETERMINATION OF PYROGALLOL. THE ELECTRODES PREPARED BY MIXING GRAPHITE POWDER, PARAFFIN OIL AND SIO2. THE ELECTROCHEMICAL RESPONSE CHARACTERISTICS OF THESE MODIFIED ELECTRODES TOWARD PYROGALLOL WERE INVESTIGATED BY CYCLIC VOLTAMMETRY AND DIFFERENTIAL PULSE VOLTAMMETRY. PRIOR TO ESTABLISH THE DETECTION METHOD EXPERIMENTAL VARIABLES WERE OPTIMIZED.UNDER THE OPTIMUM EXPERIMENTAL CONDITIONS THE PEAK CURRENT WAS LINEARLY DEPENDENT ON THE PYROGALLOL CONCENTRATION IN THE RANGE OF 2×10-6 TO 3×10-4 MOL L-1 WITH SIO2 MODIFIED ELECTRODES.THE APPLICABILITY OF THE PROPOSED MODIFIED ELECTRODE WAS FURTHER EVALUATED BY THE DETERMINATION OF PYROGALLOL IN REAL SAMPLES.

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APA: Copy

QADERIZADEH, S.M., & TASHKHOURIAN, J.. (2012). SILICA-MODIFIED CARBON PASTE ELECTRODE FOR DETERMINATION OF PYROGALLOL. IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. SID. https://sid.ir/paper/909961/en

Vancouver: Copy

QADERIZADEH S.M., TASHKHOURIAN J.. SILICA-MODIFIED CARBON PASTE ELECTRODE FOR DETERMINATION OF PYROGALLOL. 2012. Available from: https://sid.ir/paper/909961/en

IEEE: Copy

S.M. QADERIZADEH, and J. TASHKHOURIAN, “SILICA-MODIFIED CARBON PASTE ELECTRODE FOR DETERMINATION OF PYROGALLOL,” presented at the IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. 2012, [Online]. Available: https://sid.ir/paper/909961/en

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