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
Email: schalk@unf.edu
Website: @unf

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Organic compound

Classification: Organic compound -> aminophylline

Citations 1

"Batch And Flow Injection Determination Of Ethylenediamine In Pharmaceutical Preparations"
Anal. Chim. Acta 1986 Volume 179, Issue 1 Pages 289-297
M. Milla, R. M. de Castro, M. Garcia-Vargas and J. A. Muñoz-Leyva

Abstract: The methods are based on the formation of an orange Cu(I) chelate of a Schiff base produced by the reaction of ethylenediamine(I) with pyridine-2-carboxaldehyde at pH 8.5 (borate buffer). The absorbance is measured after 10 min at 475 nm (e = 6210). In the batch method the response is rectilinear from 0.5 to 11.2 µg mL-1 of I, with a coefficient of variation of 0.61% (n = 11) at the 4.6 µg mL-1 level. With the flow injection system (55 samples h-1) the range is between 1.4 and 84.6 µg mL-1, with a coefficient of variation of 0.68% (n = 11) at the 36.2 µg mL-1 level. Tolerance levels for some ions in the presence and the absence of EDTA are listed. The methods were applied to the determination of I in aminophylline and pharmaceutical preparations.
Ethylenediamine Spectrophotometry Chelation Interferences