کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5131220 | 1490889 | 2016 | 8 صفحه PDF | دانلود رایگان |
- A new approach of solid contact ion selective electrodes (ISE) fabrication is tested.
- Conductive polymer layer is co-polymerized with ion-selective membrane.
- The ISE design prevents formation of water layer at the boundary between two polymers.
- The ISE shows enhanced stability and life-time.
- The sensor may be used for calcium ion determination in blood serum.
A new solid contact ion selective electrode with intermediate conducting polymer (CP) layer formed by electropolymerization on a gold electrode of a bifunctional monomer, n-phenyl-ethylenediamine-methacrylamide (NPEDMA), which contains a methacrylamide group attached to aniline, is presented. The conducting polymer was studied by means of optical spectroscopy, cyclic voltammetry and potentiometric measurements. Ca2+-ion-selective membrane based on acrylated urethane polymer was shown to co-polymerize with the CP forming highly adhesive boundary that prevents formation of water layers between the CP and membrane, thus enhancing the stability and life-time of the sensor. The designed ion-selective electrode was successfully used for determination of total calcium ion concentration in blood serum samples.
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Journal: Analytica Chimica Acta - Volume 943, 2 November 2016, Pages 50-57