title: Column chromatography of porphyrins on talc.
mesh_terms: D000096:Acetone; D000327:Adsorption; D000641:Ammonia; D002852:Chromatography, Ion Exchange / Q000295:instrumentation; D006851:Hydrochloric Acid; D008722:Methods; D011166:Porphyrins / Q000032:analysis* / Q000652:urine; D013627:Talc
chemical_list: D011166:Porphyrins; D000096:Acetone; D013627:Talc; D000641:Ammonia; D006851:Hydrochloric Acid