Microchimica Acta

, Volume 100, Issue 1–2, pp 55–61 | Cite as

1,5-bis-(2,3-dihydroxy-phenylmethylene)-thiocarbohydrazone as reagent for the spectrofluorimetric determination of nanogram amounts of gallium

  • José J. Santana
  • Melchor González-Dávila
  • Ana M. Afonso
  • Francisco García-Montelongo
Original Papers


A method is developed for the spectrofluorimetric determination of nanogram amounts of gallium using 1,5-bis-(2,3-dihydroxy-phenylmethylene)-thiocarbohydrazone in a 60% (v/v) ethanol-water medium phthalate buffered to pH* 3.5 (λex 400 nm, λem 493 nm, corrected), which allows the determination of 20–100 and 120–600 μg/ml with 1.32 and 0.80 as relative error, respectively, and 5.1 ng·ml−1 as detection limit. Interferences have been evaluated and the method applied to the determination of gallium in samples of bovine liver, heart and kidney.

Key words

gallium spectrofluorimetric biological samples 1,5-bis-(2,3-dihydroxy-phenylmethylene)-thiocarbohydrazone 


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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • José J. Santana
    • 1
  • Melchor González-Dávila
    • 1
  • Ana M. Afonso
    • 1
  • Francisco García-Montelongo
    • 1
  1. 1.Department of Analytical ChemistryUniversity of La LagunaLa LagunaSpain

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