Determination of trace impurities of peptides and alkaloids by capillary electrophoresis-ion spray mass spectrometry
β Scribed by Frank Y.L. Hsieh; Jianyi Cai; Jack Henion
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 453 KB
- Volume
- 679
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Capillary electrophoresis (CE) has been used for the characterization of the herbicides mepiquat, chlormequat, diquat (DQ), paraquat (PQ) and difenzoquat. A volatile running electrolyte solution containing acetic acidammonium acetate 50 mM (pH 4) with 10% of methanol as modifier was used to reduce a
## Abstract The technique of capillary electrophoresis β mass spectrometry (CEβMS) was applied for determination of isoquinoline alkaloids in crude methanolic extracts of medicinal plants. For the CE separations ammonium formate buffer solutions (70 or 100 mM, pH 3.0 or 4.0) containing 10% methanol
A series of newly synthesized peptides (M,= 1600-2250 Da), corresponding to portions of the extracellular domain of human granulocyte-macrophage colony stimulating factor receptor a subunit have been examined by capillary zone electrophoresis/electrospray-mass spectrometry (CZE/ES-MS). The separatio
The utility of three various analytical techniques [ion chromatography (IC), capillary electrophoresis (CE) and isotachophoresis (ITP)] was tested in the determination of counterβions in synthetic peptides. The analyzed ions were acetates, trifluoroacetates and chlorides. IC provided the best result