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) |
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Pages (from-to) | 3188-3192 |
Number of pages | 5 |
Journal | Analytical Chemistry |
Volume | 66 |
Issue number | 19 |
DOIs | |
State | Published - Oct 1 1994 |
Externally published | Yes |
ASJC Scopus subject areas
- Analytical Chemistry