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Novel Cesium Membrane Sensor Based on a Cavitand
Author(s) -
Ganjali Mohammad Reza,
Norouzi Parviz,
Emami Mehdi,
Golmohammadi Mahmoud,
Mouradzadegun Arash
Publication year - 2006
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200600161
Subject(s) - cavitand , chemistry , membrane , caesium , ion , analytical chemistry (journal) , detection limit , potassium , inorganic chemistry , crystallography , chromatography , organic chemistry , supramolecular chemistry , crystal structure , biochemistry
A PVC‐based membrane sensor was prepared for Cs + ions, which was based on 7,11,15,28‐tetraiodo‐1,21,23,25‐tetramethyl‐2,20:3,19‐dimethano‐1H,21H,23H,25H‐bis[1,3]dioxocino[5,4‐i:5′,4′i′] benzo[1,2‐d:5,4‐d′]‐bis[1,3]benzodioxocin stereoisomer (cavitand). The proposed membrane electrode exhibits a linear dynamic range of 1.0 × 10 −;1 –1.0 × 10 −;5 M, with a Nernstian slope of 59.1 ± 0.3 mV per decade, and a detection limit of 5.0 × 10 −;6 M. It has a very fast response time of <10 s and can be used for at least eight weeks without any considerable divergence in its potentials. The best sensor performance was obtained with a membrane containing 30% PVC, 62% dibutylphthalate (DBP), 6% cavitand, and 2% potassium tetrakis( p ‐chlorophenyl) borate (KTpClPB). The sensor could be used in a pH range of 4.3–9.5.