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Issue 6, 2013
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The comparative electrochemistry of 2-mercaptothiazoline when using gold/quartz and modified silver/quartz electrodes, and its application in a flow-through voltammetric sensor

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Abstract

We studied the electrochemical behavior of 2-mercaptothiazoline (1,3-thiazolidine-2-thione) on silver (Ag)/quartz and gold (Au)/quartz electrodes electrochemically deposited it on silver metal film on Ag/quartz substrates, and investigated it using electrochemical quartz crystal microbalance (EQCM) analysis with AT-cut quartz crystals (9 MHz). We found that the electrocatalytic property of Ag/quartz was better than that of gold/quartz. In addition, 2-mercaptothiazoline was detected using high-performance liquid chromatography with an electrochemical (Ag) detector (HPLC-ECD). For direct current mode, with the current at a constant potential, and measurements with suitable experimental parameters, we found a linear concentration range from 0.01 to 0.80 μg mL−1. The lower limit of detection using our method was approximately 0.1 ng. Findings using HPLC-ECD and HPLC with an ultraviolet detector were comparable.

Graphical abstract: The comparative electrochemistry of 2-mercaptothiazoline when using gold/quartz and modified silver/quartz electrodes, and its application in a flow-through voltammetric sensor

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Article information


Submitted
09 Jul 2012
Accepted
12 Jan 2013
First published
17 Jan 2013

Anal. Methods, 2013,5, 1407-1413
Article type
Paper

The comparative electrochemistry of 2-mercaptothiazoline when using gold/quartz and modified silver/quartz electrodes, and its application in a flow-through voltammetric sensor

L. Wang and Y. Chang, Anal. Methods, 2013, 5, 1407
DOI: 10.1039/C3AY26205G

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