S. Ishimitsu et al., APPLICATION OF ICP ATOMIC-EMISSION SPECTR OMETRY FOR TESTS OF BARIUM IN FOOD COLOR ALUMINUM LAKES, Shokuhin Eiseigaku Zasshi, 37(5), 1996, pp. 325-328
ICP atomic emission spectrometry was applied for determination of bari
um (Ba) in food color aluminum (Al) lakes. Ba in food color Al lakes i
s in an insoluble form, but could be dissolved by adding nitric acid.
The recovery of Ba from food color Al lakes at the level of 1 mg/100 m
g was 92.6 similar to 97.4%, with high precision. Contents of Ba in Ja
panese commercial Al lakes were found to range from 18.5 to 21.6 mu g/
g.