Flow-injection method for the determination of tin in fruit juices using solid-phase spectrophotometry

An integrated solid-phase spectrophotometric-flow-injection method is proposed for the determination of tin in fruit juices. The complex formed between Sn(IV) and Pyrocatechol Violet in the flow system is concentrated on Sephadex QAE A-25 gel packed in a flow cell. The analytes are monitored by UV-v...

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Bibliographic Details
Published in:Analytica chimica acta 1994-05, Vol.289 (3), p.365-370
Main Authors: Capitán-Vallvey, L.F, Valencia, M.C, Mirón, G
Format: Article
Language:English
Subjects:
Biological and medical sciences
Flow injection
Food industries
Fruit and vegetable industries
Fruit juices
Fundamental and applied biological sciences. Psychology
Tin
UV-Visible spectrophotometry
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Summary:An integrated solid-phase spectrophotometric-flow-injection method is proposed for the determination of tin in fruit juices. The complex formed between Sn(IV) and Pyrocatechol Violet in the flow system is concentrated on Sephadex QAE A-25 gel packed in a flow cell. The analytes are monitored by UV-visible spectrophotometry at 576 nm. The method shows a detection limit of 0.3 ng ml −1 and a linear range of 2–40 ng ml −1.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(94)90013-Z