Assay of Nitrite and Determination of Nitrate Impurity in Sodium Nitrite Using a Reagent-Free Ion Chromatography System

APPLICATION NOTE 73053 Assay of potassium bitartrate using ion chromatography Authors Beibei Huang and Jeffrey Rohrer Thermo Fisher Scientific, Sunnyvale, CA Keywords Dionex IonPac AS20 column, suppressed conductivity detection, pharmaceutical, USP Monograph, drug substance, RFIC system Goal To develop an…

APPLICATION NOTE 72502 Assay of sodium thiosulfate and ionic impurities in sodium thiosulfate using ion chromatography Authors Hua Yang and Jeffrey Rohrer Thermo Fisher Scientific, Sunnyvale, CA, USA Goal To validate the ion chromatography (IC) methods for the assay of…

APPLICATION NOTE 73987 Determination of nitrite in pharmaceuticals Authors: Jingli Hu and Jeffrey Rohrer Thermo Fisher Scientific, Sunnyvale, CA, USA Keywords: Dionex ICS 6000 HPIC system, Dionex IonPac AS19-4µm column, losartan, metformin, ranitidine, diphenhydramine, ADRS 600 suppressor, ion chromatography, n-nitrosamine,…

APPLICATION NOTE 73455 Determination of nitrite impurity in dalteparin sodium using ion chromatography Authors: Jingli Hu and Jeffrey Rohrer Thermo Fisher Scientific, Sunnyvale, CA Keywords: Dionex IonPac AS15 column, Dionex ICS-5000+ HPIC system, electrochemical detection, drug substance, USP monograph, Dionex…