| Comparison of a calixarene-based ion-selective electrode with two automated analyzers for the clinical determination of sodium in blood plasma. | |
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MedLine Citation:
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PMID: 2100609 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Neutral-carrier ion-selective electrodes based on methyl p-t-butylcalix[4]aryl acetate have been prepared that are responsive to sodium ions. The miniaturized catheter-type electrodes were obtained by dip-coating their porcelain tips in a PVC membrane cocktail. Examination of the general performance of the electrodes revealed excellent characteristics in terms of Nernstian response, selectivity, stability, reproducibility and response time. The results from the indirect potentiometric assessment of a large number of plasma samples with the electrodes showed a good correlation with the results from two automated analyzers (Technicon Smac 3, Hitachi 704) and with flame photometric data. Although inconsistencies were observed in the measurement of some plasma samples, the variance seemed to be method-dependent, and the overall performance of the electrodes showed promise as an alternative to the sodium glass electrode. Some factors influencing the standard potential of the measuring cell are discussed as a source of error. |
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Authors:
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M Telting-Diaz; F Regan; D Diamond; M R Smyth |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Journal of pharmaceutical and biomedical analysis Volume: 8 ISSN: 0731-7085 ISO Abbreviation: J Pharm Biomed Anal Publication Date: 1990 |
Date Detail:
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Created Date: 1991-08-26 Completed Date: 1991-08-26 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8309336 Medline TA: J Pharm Biomed Anal Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 695-700 Citation Subset: IM |
Affiliation:
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School of Chemical Sciences, Dublin City University, Ireland. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Autoanalysis Calixarenes Electrodes Humans Macromolecular Substances Membranes, Artificial Sodium / blood* |
| Chemical | |
Reg. No./Substance:
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0/Macromolecular Substances; 0/Membranes, Artificial; 130036-26-9/Calixarenes; 7440-23-5/Sodium |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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