Liquid Core Waveguide Spectrophotometry for the Sensitive Determination of Nitrite in River Water Samples

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  • TAKIGUCHI Hiromi
    Department of Chemistry, Faculty of Engineering, Gunma University
  • TSUBATA Azusa
    Department of Chemistry, Faculty of Engineering, Gunma University
  • MIYATA Makoto
    Department of Chemistry, Faculty of Engineering, Gunma University
  • ODAKE Tamao
    Department of Chemistry, Faculty of Engineering, Gunma University
  • HOTTA Hiroki
    Department of Chemistry, Faculty of Engineering, Gunma University
  • UMEMURA Tomonari
    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University
  • TSUNODA Kin-ichi
    Department of Chemistry, Faculty of Engineering, Gunma University

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Abstract

A flow injection analysis system was built with a liquid core waveguide spectrophotometric detector using an 80 cm Teflon AF-1600 capillary tube (2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxole/tetrafluoroethylene). The system was applied to determine nitrite ion in river water samples. The lower limit of detection for nitrite was 2.1 nmol dm-3 (0.1 ng dm-3 as NO2-) and the relative standard deviation of measurements was typically 0.56% (n = 5) at 0.21 µmol dm-3.

Journal

  • Analytical Sciences

    Analytical Sciences 22 (7), 1017-1019, 2006

    The Japan Society for Analytical Chemistry

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