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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/7625

Title: Effects of ultrasonic irradiation on the spectrophotometric determination of nickel with dimethylglyoxime
Other Titles: Analytica Chimica Acta
Authors: Sousa, Clarivaldo Santos de
Korn, Mauro
Keywords: Ultrasonic waves;Reagent generation;Nickel determination;Alloys;Spectrophotometry
Issue Date: 2001
Abstract: Influence of ultrasonic waves in the spectrophotometric determination of nickel with dimethylglyoxime (DMG) was investigated and interferences from foreign species such as Co2+, Fe2+ and Cu2+ were studied. A 1.5-fold sensitivity enhancement in relation to the conventional method involving nickel oxidation with persulfate was attained. In addition, operator handling and reagent consumption were lessened. The analytical curve was linear from 0.15 to 1.5 mg l−1 Ni and detection limit was estimated as 13 μg l−1 Ni. The procedure was applied to the analysis of alloys, containing Co, Fe and Cu in different proportion, and accuracy was assessed by using certified reference materials.
Description: Texto completo: acesso restrito. p. 309–315
URI: http://www.repositorio.ufba.br/ri/handle/ri/7625
ISSN: 0003-2670
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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