Potentiometric taste sensors with electrodes containing lipophilic compound / polymer membranes were already used to distinguish commercial liquid products. In this paper a new potentiometric taste sensor consisting of six All Solid State Electrodes (ASSEs) has been presented. Each of the membrane contains a selected lipophilic compound. The set-up consists of a reference electrode and six ASSEs. The inner layer made of a conducting polymer PEDOT/PSS was put on carbon disc. The outer layer was a polyvinyl chloride membrane containing appropriate lipophilic compound, and plasticizer. Liphophilic compounds used in membrane electrodes were the following: hexadecyltrimethyloammonium bromide, hexadecyl amine, palmitic acid, lauric acid, decanoic acid and cholesterol. The responses of ASSEs to hydrochloric and tartaric acid solutions in the concentration range of 10-5-10-2M have been presented. The electrodes with negatively charged membraneswere more sensitive to the changes of acid concentration in comparison to other electrodes.Straight line relationship of E = f(C) for hydrochloric acid suggests that such electrode may be used for analytical application. The stability of lipophilic compound- membrane electrodes proposed in this six - channel taste sensor is not sufficient enoughand should be improved.
Authors
Additional information
- Category
- Publikacja monograficzna
- Type
- rozdział, artykuł w książce - dziele zbiorowym /podręczniku w języku o zasięgu międzynarodowym
- Language
- angielski
- Publication year
- 2014
