Abstract
Studies on the extraction method for various kinds of dyes in a mixture with liquid anion exchanger are described. Organic layer, primene-JMT in benzen shaken with acetic acid, was used as the extraction agent, ammonia solution was used as the stripping agent, and 12 of coal-tar dyes in aqueous solution were quantitatively recovered. This method was used for the separation of natural dye in anchovy sauce and determination of a mixture of coal-tar dyes in strawberry jam, and satisfactory results were obtained.
