Determination of Trace Hydrazine in Environmental Water Samples by in situ Solid Phase Extraction

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  • KATO Toshikuni
    Graduate School of Science and Engineering, Shimane University Shimane Prefectural Institute of Public Health and Environmental Science
  • SUGAHARA Shogo
    Graduate School of Science and Engineering, Shimane University
  • KAJITANI Takahiro
    Graduate School of Science and Engineering, Shimane University
  • SENGA Yukiko
    Faculty of Science, Toho University
  • EGAWA Michiko
    Graduate School of Science and Engineering, Shimane University
  • KAMIYA Hiroshi
    Shimane Prefectural Institute of Public Health and Environmental Science Research Center for Coastal Lagoon Environments, Shimane University
  • SEIKE Yasushi
    Graduate School of Science and Engineering, Shimane University Research Center for Coastal Lagoon Environments, Shimane University

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タイトル別名
  • Determination of Trace Hydrazine in Environmental Water Samples by <i>in situ</i> Solid Phase Extraction

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A simple and rapid in situ method for the determination of hydrazine based on the concentration of aldazine compound formed by the reaction of hydrazine with p-dimethylaminobenzaldehyde was developed. This method was based on solid-phase extraction using a Sep-Pak C18 cartridge, followed by the quantification of hydrazine using a spectrophotometric method. To a sample solution of environmental water, p-dimethylaminobenzaldehyde solution was added to form aldazine by the reaction with hydrazine. The solution was passed through a Sep-Pak C18 cartridge for the adsorption of aldazine. In the laboratory, the aldazine adsorbed on the Sep-Pak C18 cartridge was eluted by passing a hydrochloric acid–ethanol (1:10) solution through the cartridge, and the color intensity of the solution was measured at 457 nm. The limit of detection for the new method was 0.2 mgN L−1 of hydrazine. The determination of hydrazine in solution was not influenced even by hydrogen sulfide and organic matter. This method was then applied to the brackish water of Lake Nakaumi in the eastern area of Shimane Prefecture, Japan. This method was used to determine hydrazine in freshwater, seawater and wastwater.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 33 (4), 487-491, 2017

    社団法人 日本分析化学会

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