title: A method for determining free azide ions by automatic analysis in the presence of a covalent cephalosporin azide.
mesh_terms: D000042:Absorption; D001322:Autoanalysis; D001386:Azides / Q000032:analysis*; D002511:Cephalosporins / Q000032:analysis* / Q000037:antagonists & inhibitors; D055598:Chemical Phenomena; D002621:Chemistry; D003124:Colorimetry; D007202:Indicators and Reagents; D007477:Ions / Q000032:analysis; D007769:Lactams / Q000032:analysis; D008722:Methods; D013056:Spectrophotometry, Ultraviolet; D013329:Structure-Activity Relationship
chemical_list: D001386:Azides; D002511:Cephalosporins; D007202:Indicators and Reagents; D007477:Ions; D007769:Lactams