title: Kinetic method for the determination of nanogram amounts of lead(II) using its catalytic effect on the reaction of manganese(II) with 5,10,15,20-tetrakis(4-sulphonatophenyl)porphine.
mesh_terms: D002384:Catalysis; D055598:Chemical Phenomena; D002621:Chemistry; D007700:Kinetics; D007854:Lead / Q000032:analysis*; D008345:Manganese; D011166:Porphyrins; D014867:Water / Q000032:analysis
chemical_list: D011166:Porphyrins; D014867:Water; D007854:Lead; C016136:tetraphenylporphine sulfonate; D008345:Manganese