Mh. Lamoree et al., ON-CAPILLARY ISOTACHOPHORESIS FOR LOADABILITY ENHANCEMENT IN CAPILLARY ZONE ELECTROPHORESIS MASS-SPECTROMETRY OF BETA-AGONISTS, Biological mass spectrometry, 23(6), 1994, pp. 339-345
For the enhancement of sample loadability and concentration sensitivit
y in capillary zone electrophoresis/mass spectrometry (CZE/MS) on-line
isotachophoresis/capillary zone electrophoresis (ITP/CZE) in a single
capillary prior to mass spectrometric detection is described for clen
buterol and some analogues. Concentration detection limits were found
to be in the nanogram per millilitre range. The applicability of ITP/C
ZE/MS as a trace analysis technique is demonstrated by the determinati
on of some beta-agonists in calf urine.