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Flow-injection analysis with tetrameric calixarene-based potentiometric detection

✍ Scribed by Martin Telting-Diaz; Dermot Diamond; Malcolm R. Smyth

Book ID
102982390
Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
523 KB
Volume
251
Category
Article
ISSN
0003-2670

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✦ Synopsis

The performance of potentiometric detection based on calix[4]arene compounds was investigated for use in flow injection analysis. Two neutral carriers, namely methyl p-tert-butylcalix[4]aryl acetate and the methyl tetraketone derivative of p-tert-butylcalix[4]arene, showed excellent stability and rapid response to sodium in a series of carrier streams. The application of these membrane electrodes to the determination of sodium in clinical samples was assessed and compared with flame photometry and a hospital-based autoanalyser.

The results obtained suggest that the flow-injection approach offers a significant improvement in precision and accuracy in comparison with a dip method reported earlier.

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