Original Papers Water Analysis

Fresenius' Journal of Analytical Chemistry

, Volume 348, Issue 8, pp 598-601

Polymer based RIFS sensing: an approach to the indirect measurement of organic pollutants in water

  • G. KrausAffiliated withInstitute for Physical and Theoretical Chemistry, University of Tübingen
  • , A. BrechtAffiliated withInstitute for Physical and Theoretical Chemistry, University of Tübingen
  • , V. VasicAffiliated withInstitute for Physical and Theoretical Chemistry, University of Tübingen
  • , G. GauglitzAffiliated withInstitute for Physical and Theoretical Chemistry, University of Tübingen

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Abstract

Organic pollutants in water originating from industrial sources are a major problem. For their detection, the application of thin film polymer transducers is described. The reflectometric interference spectroscopy (RIFS) technique was used as a method of detection. Sampling is achieved by an FIA system which allows the determination of concentrations of hydrocarbons in water. The experimental set-up is outlined in detail. The sensitivities for toluene and different chlorinated hydrocarbons are given. The sensors used show a linear dependence on the analyte concentration over a wide concentration range. The limit of detection achieved with this system is discussed.