Spectrofluorimetric Determination of Germanium Traces Using 1,2,4-Trihydroxyantraquinone

R. Matíes Department of Analytical Chemistry, Food Science and Toxicology, Faculty of Chemistry, University of La Laguna, E-38204, La Laguna, Tenerife, Spain

J. J. Arias Department of Analytical Chemistry, Food Science and Toxicology, Faculty of Chemistry, University of La Laguna, E-38204, La Laguna, Tenerife, Spain

F. Jiménez Department of Analytical Chemistry, Food Science and Toxicology, Faculty of Chemistry, University of La Laguna, E-38204, La Laguna, Tenerife, Spain

M. Román Department of Analytical Chemistry, Faculty of Sciences, University of Granada, E-18071, Granada, Spain

ABSTRACT

A new spectrofluorimetric method for determination of germanium traces based on its reaction with 1,2,4-Trihydroxyantraquinone, at an apparent pH 8.8 provided by an ammonia/ammonium chloride buffer, in a 80:20(v/v) ethyleneglycol water medium is proposed. The calibration graph is linear over the range 70–725 ng/ml and features a detection limit of 2.5 ng/ml. The effect of potential major interferences has been investigated and the proposed method was successfully applied to the determination of germanium in synthetic samples and industrial concentrates, after extraction with CCl₄, in an 9 M HCl medium.

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Spectrofluorimetric Determination of Germanium Traces Using 1,2,4-Trihydroxyantraquinone

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Spectrofluorimetric Determination of Germanium Traces Using 1,2,4-Trihydroxyantraquinone

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