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: Plant -> toadstool

Citations 1

"Spectrophotometric Determination Of Iron With Ferrozine By Flow Injection Analysis"
Talanta 1997 Volume 44, Issue 10 Pages 1793-1801
M. I. Pascual-Reguera*, I. Ortega-Carmona and A. Molina-Díaz

Abstract: Two methods for the determination of iron by normal FIA and reversed FIA were developed using sodium 3-(2-pyridyl)-5,6-diphenyl-1,2,4-triazine-4',4''-disulfonate (ferrozine). The reagent formed a chelate with Fe(II) in hexamethylenetetramine buffered medium at pH 5.5. In one previous reaction coil Fe(III) was reduced to Fe(II) by ascorbic acid and in the other reaction coil the complexation reaction was developed. The linear range of the determination was 0.5-6 and 0.1-5 µg mL-1 of iron for normal FIA and reversed FIA respectively. The proposed method was sensitive (detection limit 0.012 and 0.010 µg mL-1), rapid and reproducible (RSD 0.3 and 0.28%). The method was satisfactorily applied to the determination of iron in waste water, toadstool tissue, potato leaves, human hair and bauxites at a sampling rate of 90 and 50 samples h-1 for normal FIA and reversed FIA respectively.
Iron Spectrophotometry Reverse Sensitivity