title: Determination of nitrite ion and sulfanilic and orthanilic acids by differential pulse polarography.
mesh_terms: D001557:Benzenesulfonates / Q000032:analysis*; D003979:Diazonium Compounds / Q000032:analysis; D004355:Drug Stability; D006863:Hydrogen-Ion Concentration; D009573:Nitrites / Q000032:analysis*; D011048:Polarography / Q000379:methods; D013425:Sulfanilic Acids / Q000032:analysis*
chemical_list: D001557:Benzenesulfonates; D003979:Diazonium Compounds; D009573:Nitrites; D013425:Sulfanilic Acids; C100048:2-sulfanilic acid