title: DIRECT SPECTROPHOTOMETRIC EXAMINATION OF 2,4-DINITROPHENYLHYDRAZONES ON PAPER CHROMATOGRAMS.
mesh_terms: D002845:Chromatography; D002854:Chromatography, Paper; D004140:Dinitrophenols; D005503:Food Additives; D006834:Hydrazines; D006835:Hydrazones; D012106:Research; D013053:Spectrophotometry
chemical_list: C001072:2,4-dinitrophenylhydrazone; D004140:Dinitrophenols; D005503:Food Additives; D006834:Hydrazines; D006835:Hydrazones
keywords: CHROMATOGRAPHY; DINITROPHENOLS; EXPERIMENTAL LAB STUDY; FOOD ADDITIVES; HYDRAZINES; SPECTROPHOTOMETRY