Differential spectrophotometric method for the determination of vitamin A (retinol) by using trifluoroacetic acid, and its application to related compounds.
D003124:Colorimetry; D013053:Spectrophotometry / Q000379:methods; D014269:Trifluoroacetic Acid; D014801:Vitamin A / Q000032:analysis*
D014801:Vitamin A; D014269:Trifluoroacetic Acid