Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 29, Issue 4, Pages 755-759Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0731-7085(02)00127-9
Keywords
flow injection analysis; L-ascorbic acid; tissues
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A method for spectrophotometric determination Of L-ascorbic acid (vitamin Q in tissues by flow injection analysis is reported. The procedure is based on the oxidation of analyse with iron(III) and 2,2'-dipyridyl. Concentrations of vitamin C in the range of 0.5-20 ppm have been determined with a relative standard deviation 1.2% (n = 15). The injection rate was 40 samples per h. The method was applied to the determination Of L-ascorbic acid in rat's tissues (blood serum, brain, and liver) and compared favourably with an independent reference method based on spectrophotometry. (C) 2002 Published by Elsevier Science B.V.
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