Reviews

Journal of Analytical Chemistry

, Volume 65, Issue 9, pp 880-898

Chemical sensors and their systems

  • Yu. G. VlasovAffiliated withFaculty of Chemistry, St. Petersburg State University
  • , Yu. E. ErmolenkoAffiliated withFaculty of Chemistry, St. Petersburg State University
  • , A. V. LeginAffiliated withFaculty of Chemistry, St. Petersburg State University
  • , A. M. RudnitskayaAffiliated withFaculty of Chemistry, St. Petersburg State University
  • , V. V. KolodnikovAffiliated withFaculty of Chemistry, St. Petersburg State University

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Abstract

The review presents a short record of the evolution of chemical sensors (ion selective electrodes) and multisensor systems of an electronic tongue type, based on the organization principles similar to those of biological sensors. The main types of chemical sensors and multisensor electronic tongue combinations elaborated today are considered along with sensitive materials used in them. Recent advances in chemical sensors, for example, lower detection limits and so-called true selectivity are scrutinized. Also, some widespread analytical applications of electron tongues, including those for the identification and classification of liquid media, for the quantification of various components in there, for the control of industrial processes, as well as the type and intensity evaluation of the taste of food and medications are discussed.