title: SPECTROPHOTOMETRIC DETERMINATION OF HIGH MOLECULAR WEIGHT QUATERNARY AMMONIUM CATIONS WITH PICRIC ACID. APPLICATION TO RESIDUAL AMOUNTS IN POLYSACCHARIDES.
mesh_terms: D064751:Ammonium Compounds; D002412:Cations; D002623:Chemistry Techniques, Analytical; D003454:Cryptococcus; D008970:Molecular Weight; D010851:Picrates; D011134:Polysaccharides; D011135:Polysaccharides, Bacterial; D000644:Quaternary Ammonium Compounds; D012106:Research; D013053:Spectrophotometry; D014974:Xanthomonas
chemical_list: D064751:Ammonium Compounds; D002412:Cations; D010851:Picrates; D011134:Polysaccharides; D011135:Polysaccharides, Bacterial; D000644:Quaternary Ammonium Compounds; C005858:picric acid
keywords: AMMONIUM COMPOUNDS; CHEMISTRY, ANALYTICAL; CRYPTOCOCCUS; EXPERIMENTAL LAB STUDY; PICRATES; POLYSACCHARIDES; POLYSACCHARIDES, BACTERIAL; SPECTROPHOTOMETRY; XANTHOMONAS