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- Title
Ionic Organic Film Sensor for Determination of Phenolic Compounds.
- Authors
Silva, Tânia Regina; Westphal, Eduard; Gallardo, Hugo; Vieira, Iolanda Cruz
- Abstract
This paper describes the development of a new sensor based on an ionic organic film. The amphiphilic molecule, 4-[(4-decyloxyphenyl)-ethynyl]-1-methylpyridinium iodide (10PyI), which has liquid-crystalline properties, was synthesized and applied in the construction of a GCE/10PyI sensor. Analytical parameters for caffeic acid, repeatability (4.8 %), reproducibility (2.8 %), linearity (two ranges: 9.9×10−7 to 3.8×10−5 mol L−1 and 4.7×10−5 to 9.9×10−5 mol L−1) and detection limits (9.0×10−7 mol L−1 and 8.7×10−6 mol L−1), were determined. The method was successfully applied in the determination of total phenolic compounds (TPC) in mate herb extracts.
- Subjects
PHENOLS; LIQUID crystal films; DETECTORS; CAFFEIC acid; CARBON electrodes; MICROSCOPY; ELECTRODE design &; construction
- Publication
Electroanalysis, 2014, Vol 26, Issue 8, p1801
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201400197