Use of a Guanidinium Ionophore in a Hydrogen Sulfite-Selective Electrode

Richard S. Hutchins; Leonidas G. Bachas; Pedro Molina; Mateo Alajarín; Angel Vidal

doi:10.1021/ac00091a030

Use of a Guanidinium Ionophore in a Hydrogen Sulfite-Selective Electrode

Richard S. Hutchins, Leonidas G. Bachas, Pedro Molina, Mateo Alajarín, Angel Vidal

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

A liquid membrane-based anion-selective electrode for hydrogen sulfite has been developed using a guanidinium ionophore in a poly(vinyl chloride) membrane. At pH 6.00, a logarithmic response to hydrogen sulfite in the range 5.0 × 10⁻⁵ to 0.500 M is observed with a detection limit of 3.9 (±0.3) × 10⁻⁵ M (n = 6). The electrode demonstrated minimal response to other anions, with perchlorate (3) and salicylate (4) being the two strongest interferents. ¹H-NMR complexation was used to study the interaction between hydrogen sulfite and the ionophore in this novel 5 sensor.

Original language	English (US)
Pages (from-to)	3188-3192
Number of pages	5
Journal	Analytical Chemistry
Volume	66
Issue number	19
DOIs	https://doi.org/10.1021/ac00091a030
State	Published - Oct 1 1994
Externally published	Yes

ASJC Scopus subject areas

Analytical Chemistry

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abstract = "A liquid membrane-based anion-selective electrode for hydrogen sulfite has been developed using a guanidinium ionophore in a poly(vinyl chloride) membrane. At pH 6.00, a logarithmic response to hydrogen sulfite in the range 5.0 × 10−5 to 0.500 M is observed with a detection limit of 3.9 (±0.3) × 10−5 M (n = 6). The electrode demonstrated minimal response to other anions, with perchlorate (3) and salicylate (4) being the two strongest interferents. 1H-NMR complexation was used to study the interaction between hydrogen sulfite and the ionophore in this novel 5 sensor.",

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AU - Vidal, Angel

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