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An available strategy for elemental composition determination of organic impurities in commercial preparations based on accurate mass and peak ratio of isotopic fine structures (IFSs) by dual mode combined-FT-ICR-MS and fraction collection technology

Chemical EngineeringEnvironmental ChemistryEngineeringGas ChromatographyEnvironmental Analytical ChemistryMass SpectrometryOrganic ChemistryAnalytical ChemistryOrganic ImpuritiesFraction Collection TechnologyChemistryCommercial PreparationsMedicineElemental CharacterizationTrace ElementChromatography