Abstract
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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