Uranyl-selective PVC membrane electrodes based on some recently synthesized benzo-substituted macrocyclic diamides

Four different recently synthesized macrocyclic diamides were studied to characterize their abilities as uranyl ion carriers in PVC membrane electrodes. The electrodes based on macrocycle 1,18-diaza-3,4;15,16-dibenzo-5,8,11,14,21,24-hexaoxacyclohexaeicosane-2,17-dione resulted in a Nernstian respons...

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Bibliographic Details
Published in:Talanta (Oxford) 2002-08, Vol.58 (2), p.237-246
Main Authors: Shamsipur, Mojtaba, Soleymanpour, Ahmad, Akhond, Morteza, Sharghi, Hashem, Massah, Ahmad Reza
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Electrochemical methods
Exact sciences and technology
Macrocyclic diamides
Potentiometry
PVC membrane
Uranyl ion-selective electrodes
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Summary:Four different recently synthesized macrocyclic diamides were studied to characterize their abilities as uranyl ion carriers in PVC membrane electrodes. The electrodes based on macrocycle 1,18-diaza-3,4;15,16-dibenzo-5,8,11,14,21,24-hexaoxacyclohexaeicosane-2,17-dione resulted in a Nernstian response for UO 2 2+ ion over wide concentration ranges. The linear concentration range for the polymeric membrane electrode (PME) is 3.0×10 −6–8.2×10 −3 M with a detection limit of 2.2×10 −6 and that for the coated graphite electrode (CGE) is 5.0×10 −7–1.5×10 −3 M with a detection limit of 3.5×10 −7 M. The electrodes manifest advantages of low resistance, very fast response and, most importantly, good selectivities relative to a wide variety of other cations.
ISSN:0039-9140
1873-3573
DOI:10.1016/S0039-9140(02)00238-2