Absorption Curves for Black 7984
Abstract
PEARSoN 37 Absorption Curyes for Black 79g4 D], D. PEARSoN (Natbnal College of Food Technology ((/nitersirl, of Reatltug), lleybriclge, Surrel) The Colouring Matrer in Food Regulations, 1966 (S.I. Although chromatographic techniques are very convenient for the separa_ tion and preliminary identification of the dyes preient in foods, it is impol.tant to confirm such findings by comparing the spectrophotometric curve with that frorn the known colour. The speciophotonretrii curves ror solutions of Black 7984 in 0.1 N hydrochloric acid and 0.1 N sodium hydroxide solution ‘6 o Wavelentrh, m! Curve A: 2 mg o[ dye pcr 100 ml o10.1 N HCI sol!, B: I mg of dye per l00 rnl ol0.l N HCI sol[.
Citation
Journal of the Association of Public Analysts, 1967, 5, 37-38
