Conducting polymer modified screen-printed carbon electrode coupled with magnetic solid phase microextraction for determination of caffeine
By Filik, Hayati; Avan, Asiye Asl?han
Published in Food Chemistry
2018
Abstract
In the current study, we introduce magnetic solid phase microextraction coupled with electrochemical detection of caffeine. A commercially available disposable screen-printed carbon electrodes modified with poly Alizarin Red S are employed as electrochemical sensors in the detection stage. However, the suitability of magnetic solid phase microextraction for electroanalytical methods such as square wave voltammetry has not been declared. With our optimised conditions in hand, the system response was linearly proportional to the concentration of caffeine in the range of 0.5