Studies on the Electrochemical Behavior of Thiazolidine and Its Applications Using a Flow–Through Chronoamperometric Sensor Based on a Gold ElectrodeReportar como inadecuado




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Department of Medical Chemistry, Chia Nan University of Pharmacy and Science, 60 Erh-Jen Road, Section 1, Jen Te, Tainan 71743, Taiwan





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Abstract The electrochemical behaviors of thiazolidine tetrahydrothiazole on gold and platinum electrodes were investigated in a Britton-Robinson buffer pH 2.77–11.61, acetate buffer pH 4.31, phosphate buffer solutions pH 2.11 and 6.38 and methanol or acetonitrile containing various supporting electrolytes. Detection was based on a gold wire electrochemical signal obtained with a supporting electrolyte containing 20% methanol-1.0 mM of phosphate buffer pH 6.87, potassium dihydrogen phosphate and dipotassium hydrogen phosphate as the mobile phase. Comparison with results obtained with a commercial amperometric detector shows good agreement. Using the chronoamperometric sensor with the current at a constant potential, and measurements with suitable experimental parameters, a linear concentration from 0.05 to 16 mg L−1 was found. The limit of quantification LOQ of the method for thiazolidine was found to be 1 ng.

Keywords: electrochemical behavior; thiazolidine; chronoamperometric sensor; gold electrode electrochemical behavior; thiazolidine; chronoamperometric sensor; gold electrode





Autor: Lai-Hao Wang * and Wen-Jie Li

Fuente: http://mdpi.com/



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