Measurement of Gases by a Suppressed Conductometric Capillary Electrophoresis Separation System

Head column field-amplified stacking from the flow: Stabilization of the sample plug position by using backpressure

“…Although sample concentration by three orders has been reported [3], it seems that eventually the volume around the column head will be depleted from the analytes and therefore HC-FASS also has its limitations. Indicators of such behavior were observed by Zhang and Thomann [4] and Dasgupta and Klar [5]. From the discussion above it follows quite obviously that a continuous fresh supply of the sample could increase the HC-FASS detection sensitivity even more.…”

Recent developments in electrochemical flow detections—A review

“…The CE systems with suppressed conductivity detection have been developed, e.g. for determination of soluble ionogenic atmospheric gases [198]. Detailed studies were also carried out on the effect of variation in separation potential, hydrostatic pressure and using auxiliary electroosmotic pumping on CE with suppressed conductivity detection [199].…”

Conductimetric and potentiometric detection in conventional and microchip capillary electrophoresis

“…Bodor et al [49] have used a measuring cell based on a drilled cross in a Perspex-block and the electrical contact to the column effluent is made via a bridging electrolyte solution. In an effort to achieve lower detection limits, suppressed conductivity detection, as known from ion-chromatography, has also been adapted for capillary electrophoresis [50][51][52][53][54][55]. Good detection limits in the order of 10 27 M have been achieved, however, the implementation is not easy because of the small dimensions involved and the approach has not been widely adopted.…”