title: Separation of haemoglobins using a monodisperse cation exchanger.
abstract: In order to separate haemoglobin variants in one step, a chromatographic method using Mono S (Pharmacia) monodisperse cation exchanger was developed The separation of haemoglobins (A, S, E, D, C and F) on a short analytical column (50 X 5 mm I.D.) was accomplished in 30 min, including the regeneration, using linear buffer gradient elution (lithium chloride in 0.01 M sodium malonate, 0 to 100%). For haemoglobin A, two peaks, probably corresponding to different molecular forms, were found. This systematic double peak affected the recognition and the measurement of haemoglobins. By filling the test-tube with carbon monoxide before injecting the haemolysate, we obtained reproducible results with regard to both retention times and peak shape, and also great stability. The long-term stability and the high speed of the separation seem to be adequate for automation, making the method suitable for routine clinical laboratory-use.
mesh_terms: D001797:Blood Protein Electrophoresis; D002248:Carbon Monoxide; D002411:Cation Exchange Resins; D055598:Chemical Phenomena; D002621:Chemistry; D002852:Chromatography, Ion Exchange; D004588:Electrophoresis, Cellulose Acetate; D006453:Hemoglobinopathies / Q000097:blood; D006454:Hemoglobins / Q000302:isolation & purification*; D006801:Humans
chemical_list: D002411:Cation Exchange Resins; D006454:Hemoglobins; D002248:Carbon Monoxide