Ion chromatography (IC), utilizing an ion exclusion column coupled to a conductivity detector (CD) via a post column reactor, had been evaluated for quantifying the Total Carbon dioxide (TCO2) level in equine plasma. The concentrations obtained from the analysis of the ASE linearity set correlated with the results obtained when the measurement was done using a Beckman EL-ISE ® instrument (R 2 =...

High resolution backscatter electron (BSE) imaging of colloidal gold with field emission scanning electron microscopy (FESEM) depends upon selection of accelerating voltage, beam current, working distance between specimen and backscatter detector, type of backscatter detector, plus the nature and thickness of the metal coating used to improve conductivity and signal collection. BSE imaging of a...

phase sensitive detector described here has two principal applications: a- to produce a d.c out put proportional to- the amplitude of an incoming a,c signal and indicate, by the outut polarity, the phase of the signal with respect to an internal reference. b- to detect the presence of a signal of known phase and frequency which would otherwise be lost in «background noise» and to measure its am...

The monolithic integration of a high sensitivity detector with a gas chromatography (GC) separation column creates many potential advantages over the discrete components of a traditional chromatography system. In miniaturized high-speed GC systems, component interconnections can cause crucial errors and loss of fidelity during detection and analysis. A monolithically integrated device would eli...

Ethylene glycol oligomers were visualized by indirect conductimetric detection based on dilution of the mobile phase due to the analytes. A high electrical conductivity background was maintained by the addition of 5 mM sodium nitrate in the mobile phase, and the analytes were visualized by decreases in the background when they eluted. A capacitively coupled contactless conductivity detector was...