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- Title
Study of Cobalt(III) Corrole as the Neutral Ionophore for Nitrite and Nitrate Detection via Polymeric Membrane Electrodes.
- Authors
Yang, Si; Meyerhoff, Mark E.
- Abstract
Cobalt(III) 5,10,15-tris(4- tert-butylphenyl) corrole was synthesized and incorporated into plasticized poly(vinyl chloride) membranes and studied as a neutral carrier ionophore via potentiometry. This cobalt(III) complex has binding affinity to nitrite, and the resulting membrane electrode yields reversible and Nernstian response toward nitrite. Enhanced nitrite selectivity is observed over other anions, including lipophilic anions such as thiocyanate and perchlorate when an appropriate amount of lipophilic cationic sites are added to the membrane phase. Detection limit to nitrite is ca. 5 µM. Using tributylphosphate as the plasticizer with the cobalt(III) corrole species yields electrodes with enhanced nitrate selectivity.
- Subjects
COBALT; CARCINOGENS; ELECTRIC resistors; IONS; VINYL chloride
- Publication
Electroanalysis, 2013, Vol 25, Issue 12, p2579
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201300400