Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/50674
Title: Flow injection determination of iron ions with green tea extracts as a natural chromogenic reagent
Authors: Piyanut Pinyou
Supaporn Kradtap Hartwell
Jaroon Jakmunee
Somchai Lapanantnoppakhun
Kate Grudpan
Keywords: Chemistry
Issue Date: 1-May-2010
Abstract: A green chemistry system that utilizes natural extract as an alternative reagent for determination of metal ions has been investigated. The extract of green tea, a common beverage, is used for quantification of iron. The green tea extract was prepared in acetate buffer pH 4.8 and could be used without further purification with a simple flow injection (FI) system. The intensity of iron-green tea extract complexes was monitored using a green LED photometer. The use of natural reagent combined with the simple FI-LED photometer set up offers an alternative low cost and rapid system for the determination of metal ions. Detection limit of 0.05 ppm of Fe(III) ion and sampling rate of 180 injections h-1 were achieved. Application of this system to the analysis of iron in pharmaceutical samples was demonstrated, and the results agreed well with those from the AOAC method. 2010 © The Japan Society for Analytical Chemistry.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77955761400&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/50674
ISSN: 13482246
09106340
Appears in Collections:CMUL: Journal Articles

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