Ducharme, D M A simple apparatus and procedure for digestion of biologic materials in determinations of nonvolatile elements. [electronic resource] - The American journal of clinical nutrition May 1974 - 528-30 p. digital Publication Type: Journal Article ISSN: 0002-9165 Standard No.: 10.1093/ajcn/27.5.528 doi Subjects--Topical Terms: AnimalsCalcium, Dietary--analysisChemistry--instrumentationElements--analysisFeces--analysisFood AnalysisHumansMeat--analysisMethodsMilk--analysisNitratesPerchloratesPhosphorus--analysisPotassium--analysisSodium--analysisSpectrophotometrySpectrophotometry, AtomicSweat--analysisVegetables--analysis