University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Oil -> edible

Citations 2

"Direct Determination Of Copper And Iron In Edible Oils Using Flow Injection Flame Atomic Absorption Spectrometry"
J. Anal. At. Spectrom. 1991 Volume 6, Issue 7 Pages 581-584
Vincente Carbonell, A. R. Maurí, Amparo Salvador and Miguel de la Guardia

Abstract: A procedure is described that allows the determination of Cu and Fe in oil without prior treatment or dilution. Samples are continuously aspirated (1 mL min-1) into the flame using a single manifold and organic standard solutions of Cu and Fe in oil are injected via a flow injector loop into the flow. The variation in the absorbance values from the baseline is measured and the direct standard additions method used to determine Cu and oil content of samples. The instrumental and flame conditions are optimized to obtain the best sensitivity and repeatability with direct introduction of oil samples.
Copper Iron Spectrophotometry Optimization Standard additions calibration

"Flow Injection Analysis Of Lipid Hydroperoxides"
Nihon Yukagakkaishi 1998 Volume 47, Issue 10 Pages 1053-1059

Abstract: Flow injection methods for lipid hydroperoxides were reviewed with 18 references. The sample loaded on the system is mixed with a reagent on line followed by a reaction and detection in series. These methods make it possible to determine lipid hydroperoxides easily and rapidly. It is required that the detection methods of FIA have rapid response, high specificity, high sensitivity and free from the effect of coexistent substances. Fluorometric detection with diphenyl-1-pyrenylphosphine was one of the most suitable methods for this purpose, the FIA using this reagent made it possible to analyze lipid hydroperoxides at 10^-13 mole level within 2 min intervals and with almost no effects by coexistent antioxidn. agents. This method was successfully applied for edible oils and some foods. Other detection methods such as colorimetry of I3- and a chemiluminescence method also described.
Hydroperoxides, lipid Fluorescence Chemiluminescence Spectrophotometry Review