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Capillary electrophoresis-inductively coupled plasma mass spectrometry interface with minimised dead volume for high
1University of Oslo, Department of Chemistry, Norway. anders.tangen@eu.apbiotech.com
Journal of Chromatography. A
|September 22, 2000
Abstract:
A modified microconcentric nebulizer (MCN-100) has been used to construct an improved interface with minimised liquid and gas phase dead volumes for the coupling of capillary electrophoresis (CE) and inductively coupled plasma mass spectrometry (ICP-MS). A plate number of 3.6 x 10(6) plates m(-1) has been achieved. This is an order of magnitude better than the results previously reported for CE-ICP-MS. The separation efficiency of the system is demonstrated by the baseline separation of eight rare earth metals within a time span of 14.6 s. The system was used to control the purity of vitamin B12 and glutaredoxin 2 from Escherichia coli.