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A Calcium Solid State Ion Selective Minisensor Based on Lipid Films on ZnO Nanorods
Author(s) -
Mitrou Nikolaos,
Nikoleli GeorgiaParaskevi,
Nikolelis Dimitrios P.,
Psaroudakis Nikolas,
Scoullos Michael
Publication year - 2014
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201400089
Subject(s) - electrode , nanorod , calcium , calibration curve , ion , dipalmitoylphosphatidylcholine , materials science , reproducibility , analytical chemistry (journal) , inorganic chemistry , chemistry , nanotechnology , detection limit , chromatography , membrane , metallurgy , organic chemistry , phospholipid , biochemistry , phosphatidylcholine
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 5 s. 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 1 month. 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.