Sequential injection fluorimetric determination of Sn in juices of canned fruits
作者： Elane S Boa Morte , Maria Graças A Korn , M Lúcia MFS Saraiva , José LFC Lima , Paula CAG Pinto
DOI: 10.1016/J.TALANTA.2009.02.019
关键词: Sequential injection 、 Chemistry 、 CETYLPYRIDINIUM BROMIDE 、 Fluorescence spectroscopy 、 Sulfonic acid 、 Detection limit 、 Fluorescence spectrometry 、 Atomic absorption spectroscopy 、 Chromatography 、 Canned fruit
摘要: The present work describes the development of a fast and robust sequential injection fluorimetric procedure for determination Sn in juices canned fruits. developed automatic methodology is based on complexation with 8-hydroxyquinoline-5-sulfonic acid (HQSA) to form product (λ exc = 354 nm; λ em 510nm). influence dimethylsulfoxide (DMSO) cetylpyridinium bromide (CPB) sensitivity was evaluated. Linear calibration plots were obtained concentrations between 1 10 mg L -1 , detection limit 0.38 mgL . In each analytical cycle 0.006 HQSA 0.47 CPB consumed 1.5 mL effluent generated. applied fruits results complied those furnished by an electrothermal atomic absorption spectrometry comparison procedure, relative deviations lower than 5.2%. exhibited good precision (R.S.D. < 1.4%) sampling rate about 70 determinations per hour.
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