title: Determination of vitamin B12 as cobalt by use of a catalytic-spectrophotometric method.
mesh_terms: D002384:Catalysis; D003035:Cobalt / Q000032:analysis*; D013054:Spectrophotometry, Atomic; D014805:Vitamin B 12 / Q000032:analysis*
chemical_list: D003035:Cobalt; D014805:Vitamin B 12