title: Simultaneous determination of sulphathiazole and sulphanilamide in pharmaceuticals by derivative spectrophotometry.
abstract: Third-order and fourth-order derivative spectra have been used for determining sulphathiazole, sulphanilamide and their binary mixtures. The method is suitable for 1-22 micrograms ml-1 of sulphathiazole and for 0.5-14 micrograms ml-1 of sulphanilamide and can be applied for determining the sulphonamides in pharmaceuticals.
authors.affiliation: Departamento de Química Analítica, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain.
authors.forename: J J
authors.initials: JJ
authors.lastname: Berzas Nevado
authors.forename: F
authors.initials: F
authors.lastname: Salinas
authors.forename: I
authors.initials: I
authors.lastname: de Orbe Paya
authors.forename: L F
authors.initials: LF
authors.lastname: Capitan-Vallvey
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D012996:Solutions; D013056:Spectrophotometry, Ultraviolet; D013424:Sulfanilamides / Q000032:analysis*; D013432:Sulfathiazoles / Q000032:analysis*; D013607:Tablets
chemical_list: D007202:Indicators and Reagents; D012996:Solutions; D013424:Sulfanilamides; D013432:Sulfathiazoles; D013607:Tablets