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Spectrofluorimetric determination of aluminum ions via complexation with luteolin in absolute ethanol
Author(s) -
Sun Jinyu,
Wu You,
Xiao Dan,
Lin Xia,
Li Hui
Publication year - 2014
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.2571
Subject(s) - detection limit , chemistry , mass spectrometry , analytical chemistry (journal) , fluorescence , fluorescence spectrometry , ultraviolet , aluminium , metal ions in aqueous solution , stoichiometry , linear range , luteolin , chelation , ion , chromatography , inorganic chemistry , materials science , organic chemistry , physics , optoelectronics , quantum mechanics , antioxidant , quercetin
An optimized and validated spectrofluorimetric method has been developed for the rapid determination of aluminum in absolute ethanol. The method is based on the chelation of aluminum and luteolin which results in a complex exhibiting an intense emission signal. The characterization of Al–luteolin complex was studied using ultraviolet–visible spectrometry, infrared spectrometry, fluorescence and mass spectrometry. The complex stoichiometry ratio of aluminum:luteolin was 1:2. The fluorescence of the complex was monitored at an emission wavelength of 545 nm with excitation at 518 nm. The linear concentration range was 6.5 × 10 ‐7 to 4.0 × 10 ‐5 M with a correlation coefficient of r = 0.998. The detection limit was 5.0 × 10 ‐7 M. The method was appropriately validated and yielded relative standard deviations of < 2.3% ( n = 5), which was considered acceptable. The method was successfully applied in the determination of aluminum in river water, skin care products and pharmaceutical samples. Copyright © 2013 John Wiley & Sons, Ltd.