Journal article
Selectivity of membrane electrodes based on derivatives of dibenzyltin dichloride
Analytical chemistry (Washington), Vol.63(8), pp.754-759
04/01/1991
DOI: 10.1021/ac00008a003
PMID: 1877747
Abstract
Selectivity properties are established for membrane electrodes prepared by incorporating bis(p-methylbenzyl)tin dichloride, dibenzyltin dichloride, and bis(p-chlorobenzyl)tin dichloride in plasticized polymer membranes. These electrodes display an unusually high level of selectivity for dibasic phosphate over many common anions. Electrodes prepared with the p-chloro derivative possess the best detection limit and the highest degree of selectivity for phosphate. Selectivity coefficients are calculated for phosphate relative to the following groups of anions: salicylate, benzoate, thiocyanate, iodide, nitrate, bromide, chloride, acetate, fluoride, pyrophosphate, arsenate, adenosine 5'-cyclic monophosphate, adenosine 5'-monophosphate, adenosine 5'-diphosphate, and adenosine 5'-triphosphate. Tin-carbon hyperconjugation within the organotin compound is hypothesized to be critically important in the selective response to phosphate. Enhancement of tin-carbon hyperconjugation by increasing the electron-withdrawing power of substituents on the benzyl ring is predicted to provide even higher levels of selectivity for phosphate.
Details
- Title: Subtitle
- Selectivity of membrane electrodes based on derivatives of dibenzyltin dichloride
- Creators
- Scott A GlazierMark A Arnold
- Resource Type
- Journal article
- Publication Details
- Analytical chemistry (Washington), Vol.63(8), pp.754-759
- Publisher
- American Chemical Society
- DOI
- 10.1021/ac00008a003
- PMID
- 1877747
- ISSN
- 0003-2700
- eISSN
- 1520-6882
- Language
- English
- Date published
- 04/01/1991
- Academic Unit
- Center for Biocatalysis and Bioprocessing; Fraternal Order of Eagles Diabetes Research Center; Chemistry
- Record Identifier
- 9984216724802771
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