USE OF A GUANIDINIUM IONOPHORE IN A HYDROGEN SULFITE-SELECTIVE ELECTRODE

被引：45
作者：
HUTCHINS, RS
MOLINA, P
ALAJARIN, M
VIDAL, A
BACHAS, LG
机构：
[1] UNIV KENTUCKY,DEPT CHEM,LEXINGTON,KY 40506
[2] UNIV KENTUCKY,CTR MEMBRANE SCI,LEXINGTON,KY 40506
[3] UNIV MURCIA,FAC QUIM,DEPT QUIM ORGAN,E-30071 MURCIA,SPAIN
来源：
ANALYTICAL CHEMISTRY | 1994年 / 66卷 / 19期
关键词：
D O I：
10.1021/ac00091a030
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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 x 10(-5) to 0.500 M is observed with a detection limit of 3.9 (+/-0.3) x 10(-5) M (n = 6). The electrode demonstrated minimal response to other anions, with perchlorate (K-HSO3-,ClO4-(pot) = 7.0 X 10(-3)) and salicylate (K-HSO3-,salicylate(pot) = 4.6 X 10(-3)) being the two strongest interferents. H-1-NMR complexation was used to study the interaction between hydrogen sulfite and the ionophore in this novel HSO3- sensor.
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页码：3188 / 3192
页数：5
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