Electrochromatography and micro high-performance liquid chromatography with 320 μm I.D. packed columns

Yan, Chao; Schaufelberger, Daniel; Erni, F.

doi:10.1016/0021-9673(94)80276-9

Cited by 153 publications

(53 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the highest EOF velocity was obtained at the lowest concentration of methanol (30%) in our study (similar results have also been found [28,29]). Although these differences have yet to be well resolved, Kenndler et al [30] had investigated the influence of organic solvent on the EOF and shown the significant findings, which helped us to consider the EOF tendency observed in our study.…”

Section: Effect Of Mobile Phase Compositionsupporting

confidence: 92%

Capillary electrochromatographic analysis of barbiturates in serum

et al. 2004

View full text Add to dashboard Cite

A capillary electrochromatographic method was developed for the separation of barbiturates. The separation was optimized in a 75 microm ID capillary, packed with 3-(1,8-naphthalimido)propyl-modified silyl silica gel (NAIP), studying the effect of buffer pH, buffer concentration, and mobile phase composition. Using an applied voltage of 20 kV and the short-end injection method (9 cm capillary effective length), the mobile phase of 1.0 mM citrate buffer (pH 5.0) containing 40% methanol provided the baseline separation of barbital, phenobarbital, secobarbital, and thiopental (internal standard) in less than 4.5 min. The method was successfully applied to the analysis of barbiturates in human serum. Under the optimal conditions, good repeatability and linearity were obtained in the range of 2.90-43.29 microg/mL for barbital, phenobarbital, and secobarbital.

show abstract

Section: Effect Of Mobile Phase Compositionsupporting

confidence: 92%

Capillary electrochromatographic analysis of barbiturates in serum

et al. 2004

View full text Add to dashboard Cite

show abstract

“…9) and a careful examination of the peaks reveals narrower widths for the CEC separation. This result was confirmed in another study with small solute molecules [67] and efficiencies were in the range of 40 000-90 000 plates/m. An example of a more complex sample that can be separated by CEC (Fig.…”

Section: Packed Capillariessupporting

confidence: 82%

Column technology in capillary electrophoresis and capillary electrochromatography

Pesek

Matyska

1997

Electrophoresis

View full text Add to dashboard Cite

A review of column technology in capillary electrophoresis (CE) including wall modification processes and open tubular as well as packed column formats in capillary electrochromatography (CEC) are presented. There are many approaches which can be used to solve separation problems which provide higher efficiency and/or shorter analysis times in comparison to other chromatographic techniques. However, both CE and CEC are still relatively undeveloped in comparison to a more mature method such as high performance liquid chromatography (HPLC) and improvement in column technology is changing rapidly.

show abstract

“…The observed variations in retention are not always in the same direction [14,17], with greater retention being observed sometimes in CEC and sometimes in LC. Overall, any differences are rather modest and historically it has been the similarities in retention between CEC and LC which have been apparent, such as the comparison shown between pressure-and electrically-driven separations by Yan et al [18].…”

Section: Resultsmentioning

confidence: 95%