Spectrophotometric determination of trace amounts of iron(III) in oxalates by extraction of the mixed-ligand iron-oxalate-purpurin complex.
D000880:Anthraquinones; D007501:Iron / Q000032:analysis*; D037102:Lectins; D010070:Oxalates / Q000032:analysis*; D013055:Spectrophotometry, Infrared
D000880:Anthraquinones; D037102:Lectins; D010070:Oxalates; D007501:Iron; C511975:purpurin anthraquinone