title: Rapid determination of color additives, using the C18 cartridge.
abstract: A reliable method has been developed for the rapid separation and identification of the 7 permitted FD&C dyes (Red Nos. 3 and 40; Blue Nos. 1 and 2; Yellow Nos. 5 and 6; Green No. 3) and the recently banned FD&C Red No. 2 in foods. The colors are separated by using the C18 cartridge, and their identity is confirmed by spectrophotometry.
mesh_terms: D002855:Chromatography, Thin Layer / Q000379:methods; D005504:Food Analysis; D005505:Food Coloring Agents / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods
chemical_list: D005505:Food Coloring Agents