An electrochemical cell coupled with disposable screen-printed electrodes for use in flow injection analysis.
An electrochemical cell coupled with disposable screen-printed electrodes (SPEs) that is specifically designed for use in flow injection analysis (FIA) is described in this study. The cell is made of foldable polyoxymethylene (acetal) thick platelets with the bottom portion consisting of a cavity track to drag the SPEs in position and the top portion having predrilled T-like holes to arrange the Ag/AgCl reference electrode and stainless steel inlet & outlet. An "O ring" is suitably fixed on the top of the working electrode to form a thin-layer space where the electrochemical reaction can take place. Hydrodynamic characterization was validated by using a benchmark hexacyanoferrate redox couple. The results of practical analysis of glucose in human plasma clearly demonstrate the characteristics and applicability of the proposed wall-jet electrochemical cell in FIA.
Hsu
Cheng-Teng
CT
Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan.
Chung
Hsieh-Hsun
HH
Lyuu
Huieh-Jing
HJ
Tsai
Dong-Mung
DM
Kumar
Annamalai Senthil
AS
Zen
Jyh-Myng
JM
D001786:Blood Glucose / Q000032:analysis*; D004563:Electrochemistry; D004566:Electrodes; D017022:Flow Injection Analysis / Q000295:instrumentation / Q000379:methods; D006801:Humans; D008855:Microscopy, Electron, Scanning / Q000295:instrumentation / Q000379:methods; D010084:Oxidation-Reduction; D012117:Resins, Synthetic / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012834:Silver / Q000737:chemistry*; D013997:Time Factors
D001786:Blood Glucose; D012117:Resins, Synthetic; D012834:Silver; C010102:delrin