PrefaceChapter 1 Introduction to the Kjeldahl Method Text ReferencesChapter 2 The Kjeldahl Digestion Acid Requirements Decomposition of Organic Material Salt Addition Potassium Sulfate Sodium Sulfate Phosphates, Phosphoric Anhydride, and Phosphoric Acid Miscellaneous Salts Oxidizing Agents Potassium Permanganate Hydrogen Peroxide Perchloric Acid Potassium Persulfate The Boiling Period after Digestion Reducing Agents Reduction by Pretreatment Salicylic Acid and Related Compounds Catalysis Mercury Copper Selenium Mixed Catalyst Miscellaneous Catalysts ReferencesChapter 3 Digestion Procedure Natural Products Fertilizers Leather Cereals, Grains, Grasses, Soils Biological Materials, Foods, and Proteins Coal, Fuels, Petroleum Miscellaneous Organic Materials Amino Nitrogen Nitro Compounds Pyridine and Derivatives Heterocyclic Nitrogen Miscellaneous Nitrogen Linkages Submicro Methods ReferencesChapter 4 Distillation and Determination of Nitrogen Text ReferencesGeneral Bibliography Reviews General Oxidizing Agents Reducing Agents Catalysts Natural Products Nitro and Non-Aminoid Nitrogen Distillation and Estimation of Nitrogen ApparatusSubject Index