Cross-sensitivity evaluation of chemical sensors for electronic tongue: determination of heavy metal ions

被引:110
作者
Vlasov, Y [1 ]
Legin, A [1 ]
Rudnitskaya, A [1 ]
机构
[1] St Petersburg State Univ, Dept Chem, St Petersburg 199034, Russia
关键词
cross-sensitivity; liquid media chemical sensors; multisensor arrays;
D O I
10.1016/S0925-4005(97)00241-4
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The development of the promising new field of sensor applications, multisensor arrays for liquid analysis based on the principles of the electronic tongue, implies some new demands on sensor material research and development. Stable and reproducible sensors with partial specificity and considerable cross-sensitivities to different components in solutions are of primary interest. Solid-state potentiometric sensors, both crystalline and vitreous, are likely to be thr most promising ones for multisensor devices designed for long-term analytical application in natural and artificial complex media. The present paper deals with development or a method of evaluation of integral heavy metal cation sensitivity of solid-state sensors with special consideration of cross-sensitivity features. The method involves a comparative study of different sensor materials in individual component solutions using several criteria based on integral response parameters. The procedure scheme call be applied to evaluate cross-sensitivity of ally kind of potentiometric sensors for liquid media. (C) 1997 Elsevier Science S.A.
引用
收藏
页码:532 / 537
页数:6
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