Industrial applications of capillary zone electrophoresis-mass spectrometry
DOI: 10.1016/0021-9673(95)00289-Y
关键词: Electrospray ionization 、 Alkylphosphate 、 Analytical chemistry 、 Isotachophoresis 、 Electrospray 、 Theoretical plate 、 Chemistry 、 Chromatography 、 Mass spectrometry 、 Quadrupole mass analyzer 、 Capillary electrophoresis
摘要: Capillary zone electrophoresis was coupled on-line via a tricoaxial sheath flow interface with benchtop quadrupole mass spectrometer (CZE-MS) equipped (pneumatically assisted) electrospray ionization source. Experimental parameters were optimized for operation in the negative-ion scan mode. The system applied to fingerprinting of an alkylsulphate detergent, identification impurity chloramine-T disinfectant, characterization complex polyethoxylated alkylphosphate emulgator, analysis phenoxy acid herbicides and profiling MCPP. found fully maintain CZE separation performance, showing up 1 million theoretical plates low-molecular-mass analytes studied. sensitivity full-scan mode typically picogram range sufficient minor impurities these industrial chemicals, down 0.1% level. In addition, feasibility on-column transient isotachophoresis (ITP-CZE-MS) under high electroosmotic conditions has been demonstrated sample preconcentration subsequent trace impurities.
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