Transcription of 2.2.32. LOSS ON DRYING - 药物在线-快捷药物信息 …
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2.2.32. LOSS ON DRYING - 药物在线-快捷药物信息 …
EUROPEAN PHARMACOPOEIA Loss on dryingTable Preparation of stacking gelComponent volumes (mL) per gel mould volume ofSolution components1mL2mL3mL4mL5mL6mL8mL10 mLWater solution(1) M Tris (pH )(2) g/L SDS(3) g/L APS(4) (5) (1) Acrylamide solution:30 per cent acrylamide/bisacrylamide (29:1) solution R.(2) M Tris (pH ):1 M tris-hydrochloride buffer solution pH R.(3) 100 g/L SDS: a 100 g/L solution ofsodium dodecyl sulfate R.(4) 100 g/L APS: a 100 g/L solution ofammonium persulfate R. Ammonium persulfate provides the free radicals that drive polymerisation ofacrylamide and bisacrylamide. Since ammonium persulfate solution decomposes slowly, fresh solutions must be prepared weekly.
2.2.33. Nuclear magnetic resonance spectrometry EUROPEAN PHARMACOPOEIA 7.0 01/2009:20233 2.2.33. NUCLEAR MAGNETIC RESONANCE SPECTROMETRY INTRODUCTION Nuclearmagneticresonance(NMR)spectrometryisananalytical
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