Microfluidic Platform for FIA with Electrochemical Detection
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aDepartment of Natural Compounds, Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic, bDepartment of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM, USA, cUNESCO Laboratory of Environmental Electrochemistry, Charles University, Prague, Czech Republic
The performance of a new microfluidic device was tested in a flow-injection analysis arrangement. The influence of the electric field intensity, sample volume and concentration as well as the repeatability were evaluated for dopamine and p-cresol. Determination of glucose was carried out after reaction with glucose oxidase using amperometric detection at gold-coated screen-printed carbon ink electrode. The method provided reliable performance and easy operation. Millimolar detection limits for glucose and micromolar detection limits for dopamine and p-cresol were achieved.