A non-specific on-line method is presented for the extraction and preconcentration of two rare earth elements using a microcartridge containing C18-derivatized silica particles prior to their analysis by CZE. The microcartridge, ...

This article reports a simple methodology using dispersive liquid-liquid microextraction (DLLME) combined with CZE. It has been applied for the simultaneous determination of phenolic compounds such as caffeic, gallic, ...

Glycogen synthase catalyzes the incorporation of UDP-glucose into glycogen. The activity of the enzyme is usually measured either by a spectrophotometric method or by a radioassay. The first one is not suitable because ...

The present study evaluates the possibility of eliminating the purification steps involved in the characterization of HA by capillary zone electrophoresis (CZE). The HAs of various sources were analyzed, showing different ...

In a previous work [M. Mandaji, et al., this issue] a sample stacking method was theoretically modeled and experimentally demonstrated for analytes with low dpK(a)/dT (analytes carrying carboxylic groups) and BGEs with ...

Six phenolic compounds were separated and determined by capillary zone electrophoresis in red wine from Brazil’s region Vale do Sa˜o Francisco with total analysis time of 12 min. The limit of detections varied from 1.59 ...