Ad. Sokolowski et G. Vigh, A capillary electrophoretic system with an improved gas-phase chemiluminescence nitrogen detector, ELECTROPHOR, 22(17), 2001, pp. 3824-3832
A new, rugged nebulizer interface was designed to couple a capillary electr
ophoretic system to a gas-phase nitrogen chemiluminescence detector. By hyd
raulically decoupling the separation capillary from the nebulizer of the ga
s-phase nitrogen chemiluminescence detector, the interface-related loss of
separation efficiency could be limited to a mere 10%. The ozone reaction ch
amber of the gas-phase nitrogen chemiluminescence detector has been redesig
ned leading to a threefold improvement in detection sensitivity over the ol
d design. In combination with a field-amplified sample stacking procedure,
the new system was used to detect 0.25 ppm concentrations of UV chromophore
-free aminoglycosides.