Adsorption voltammetric techniques for the determination of uranium(VI) with 2,5-dichloro-3,6-dihydroxy-1,4-benzoquinone as complex forming reagent
Identifieur interne : 002B22 ( Main/Exploration ); précédent : 002B21; suivant : 002B23Adsorption voltammetric techniques for the determination of uranium(VI) with 2,5-dichloro-3,6-dihydroxy-1,4-benzoquinone as complex forming reagent
Auteurs : Sylvia Sander [Allemagne] ; Günter Henze [Allemagne]Source :
- Fresenius' Journal of Analytical Chemistry [ 0937-0633 ] ; 1994-08-01.
Abstract
Abstract: Uranium (VI) can be determined by adsorptive voltammetric techniques, as its chloranilic acid complex, over a wide concentration range. Differential pulse polarography is useful for quantification of uranium between 0.1 and 1.5 mg/l; for the range from 10 to 500 μg/l differential pulse voltammetry and for ultra-trace analysis between 0.024 and 40 μg/l adsorptive stripping voltammetry are preferred. The standard deviation for the 3σ-detection limit of 24 ng/l uranium was found to be 8%. In the trace analysis of metals in aquatic environmental systems by adsorptive stripping voltammetry it is normally necessary to decompose polluted water samples by UV irradiation or microwave digestion. The advantage of the developed method is the fact that no sample pretreatment is necessary.
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DOI: 10.1007/BF00323474
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