A Calcium Solid State Ion Selective Minisensor Based on Lipid Films on ZnO Nanorods

作者：Mitrou Nikolaos; Nikoleli Georgia Paraskevi; Nikolelis Dimitrios P^*; Psaroudakis Nikolas; Scoullos Michael

来源：Electroanalysis, 2014, 26(5): 919-923.

DOI：10.1002/elan.201400089

• ZnO nanorods
• Calcium
• Potentiometry
• Mineral waters

This article describes the development of a calcium solid minisensor based on lipid films on ZnO nanorods. The lipid film was composed from dipalmitoylphosphatidylcholine (DPPC) and dipalmitoylphosphatidylcic acid (DPPA). The calibration graph was logarithmically related to the concentration of calcium ions in the range from 10(-6) to 10(-3)M. The response times of the electrode were less than 5s. No memory effects were observed for this electrode. The reproducibility of the electrode was less than 5%. The electrode has shown good stability for a period of 1month. The influence of a wide range of metals and anions as potential interferences was checked. The method was applied to the rapid detection of calcium ions in mineral waters.

• 出版日期2014-5