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Determination of sulphonamides in human urine by azo dye precolumn derivatization and micellar liquid chromatography

✍ Scribed by E.F. Simó-Alfonso; G. Ramis-Ramos; M.C. García-Alvarez-Coque; J.S. Esteve-Romero

Publisher: Elsevier Science
Year: 1995
Weight: 261 KB
Volume: 670
Category: Article
ISSN: 0378-4347
DOI: 10.1016/0378-4347(95)00158-f

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## Abstract This paper describes a method for the analysis of cysteine in human urine using capillary micellar electrokinetic chromatography and on‐column reaction with 2,2′‐dipyridyl disulfide. In this reaction cysteine is quantitatively transformed into a mixed disulfide concomitantly with format