Premium
CCD‐Type Sodium Ion Image Sensor: Dynamic Observation of Ion‐Exchange Reactions of a Single Na‐Type Cation‐Exchange Resin Bead
Author(s) -
Hattori Toshiaki,
Yoshitomo Masaki,
Mori Satoshi,
Miyamoto Daichi,
Kato Ryo,
Sawada Kazuaki
Publication year - 2012
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.201100442
Subject(s) - sodium , ion exchange , ion , chemistry , membrane , analytical chemistry (journal) , selectivity , inorganic chemistry , chromatography , catalysis , biochemistry , organic chemistry
A new sodium ion image sensor containing a CCD‐type semiconductor and a plasticized PVC sodium ion selective membrane was developed. The output potential slope was linear for sodium ion concentrations from 10 −1 to 10 −5 M. The optimum membrane possessed a near Nernstian response and high selectivity to sodium ions. The sensor can take sodium ion images with a fast response, 0.2 s per image, allowing it to easily monitor the ion‐exchange reactions of a single Na‐type cation‐exchange resin bead. It was found that Na + ‐Ba 2+ ion‐exchange was faster than Na + ‐Ca 2+ ion‐exchange in the initial period.