Spectrophotometric determination of sulphamethazine by the diazotisation-coupling method with m-aminophenol as the coupling agent-application to pharamaceutical
Source
Issue
Vol. 16, Issue 3/S (31 Dec. 2005), pp.7-14, 8 p.
Publisher
University of Mosul College of Science
Publication Date
2005-12-31
Country of Publication
Iraq
No. of Pages
8
Main Subjects
Abstract EN
A spectrophotometric method for the trace determination of sulphamethazine has been worked out.
It is based on the reaction of sulphamethazine with sodium nitrite in acidic medium to form the corresponding diazonium salt.
After removal of excess nitrite with sulphamic acid, the diazotised sulphamethazine is coupled with m-aminophenol fo form an intensely-yellow coloured, water-soluble and stable azo dye which shows maximum absorption at 457 nm.
The plot of absorbance versus determinand concentration shows that Beer’s law is obeyed over the concentration range 5-150 μg sulphamethazine/25 ml final volume, i.e., 0.2-6 ppm with a molar absorptivity of 4.8X104 l.mol-1.cm-1.
The method has been applied to the assay of the drug in a tablet
American Psychological Association (APA)
Taha, Itimad A.. 2005. Spectrophotometric determination of sulphamethazine by the diazotisation-coupling method with m-aminophenol as the coupling agent-application to pharamaceutical. Rafidain Journal of Science،Vol. 16, no. 3/S, pp.7-14.
https://search.emarefa.net/detail/BIM-362113
Modern Language Association (MLA)
Taha, Itimad A.. Spectrophotometric determination of sulphamethazine by the diazotisation-coupling method with m-aminophenol as the coupling agent-application to pharamaceutical. Rafidain Journal of Science Vol. 16, no. 3 (2005), pp.7-14.
https://search.emarefa.net/detail/BIM-362113
American Medical Association (AMA)
Taha, Itimad A.. Spectrophotometric determination of sulphamethazine by the diazotisation-coupling method with m-aminophenol as the coupling agent-application to pharamaceutical. Rafidain Journal of Science. 2005. Vol. 16, no. 3/S, pp.7-14.
https://search.emarefa.net/detail/BIM-362113
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 13-14
Record ID
BIM-362113