Application of anion-exchange resin-loaded filters to the x-ray fluorescence determination of sulfate

1979 ◽  
Vol 51 (6) ◽  
pp. 783-784 ◽  
Author(s):  
B. Schreiber ◽  
P. A. Pella
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
X Ray ◽  
Fluorescence Determination

Quantitative Determination of FD&C Colors in Foods

1975 ◽  
Vol 58 (2) ◽  
pp. 278-282
Author(s):  
Charles Graichen
Keyword(s):  
Quantitative Determination ◽  
Anion Exchange ◽  
Salt Solution ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Collaborative Study ◽  
Chromatographic Technique ◽  
Different Color ◽  
Selection Of

Abstract A published procedure using Amberlite LA-2 (a liquid anion exchange resin) solutions to extract colors from food and the salt solution cellulose chromatographic technique to separate colors from each other were updated and submitted to collaborative study. Three batches of cookies and 4 purchased products were analyzed by 13 collaborators. The 3 batches of cookies contained different color mixtures requiring the selection of various procedures. The 4 purchased products were selected principally to include a variety of foods. Some results were partially deficient. The deficiencies reflect certain inadequacies in the directions as written rather than basic flaws in the method. Some improvements were suggested by the collaborators. The Associate Referee recommends that the method be further revised to correct the present inadequacies and to include some improvements, and that the revised method be submitted to another collaborative study.

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