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Cyclic voltammetric study of aflatoxin G1 at the mercury electrode

Yaacob, Mohamad Hadzri and Mohd. Yusoff, Abdull Rahim and Ahamad, Rahmalan (2010) Cyclic voltammetric study of aflatoxin G1 at the mercury electrode. Malaysian Journal of Chemistry, 12 (1). pp. 9-14. ISSN 1511-2292

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Abstract

A cyclic voltammetry (CV) study of aflatoxin G1 (AFG1) in Britton-Robinson buffer (BRB) using a control growth mercury electrode (CGME) is described. CV was carried out by anodic and cathodic potential scan over the range of 0 to -1500 mV with no accumulation time. The effect of the different scan rates and pH of BRB on the peak height and peak potential of the analyte were also studied. The results from this study showed that the reduction process on the hanging mercury electrode gives a single characteristic cathodic peak at -1184 to -1246 mV ( versus Ag/AgCl ) in BRB pH of 3.0 to 10.0. The BRB pH of 9.0 was noted as the best condition for the detection of AFG1 as the peak gives a maximum peak current. Effect of the scan rate and pH of BRB on both responses has shown that the reduction of AFG1 is irreversible, pH dependent and the limiting current is adsorption controlled.

Item Type:Article
Uncontrolled Keywords:aflatoxin G1 compound, cyclic voltammetry, Britton-Robinson buffer and control growth mercury electrode (CGME)
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:37268
Deposited By:INVALID USER
Deposited On:30 Mar 2014 13:08
Last Modified:15 Feb 2017 08:55

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