Free Access
Volume 27, Number 5, June 1999
Humic substances
Page(s) 468 - 471
Section Original articles
Analusis 27, 468-471 (1999)
DOI: 10.1051/analusis:1999127

Valveless interface for two-dimensional reversed-phase microcromatography ($\mu$-RPLC)-capillary zone electrophoresis (CZE)

O. Cabaleiro, M. Lores and R. Cela

Química Analítica, Nutrición y Bromatología, Facultad de Química, Universidad de Santiago de Compostela, Avda. Das Ciencias s/n, 15706-Santiago de Compostela, Spain

Single stage separation systems have limitations in resolving multicomponent mixtures and two-dimensional systems have higher peak capacities. A valveless interface for hyphenating Reversed-phase Microchromatography ($\mu$-RPLC) and Capillary Zone Electrophoresis (CZE) -highly orthogonal separation methods- is presented, which main innovation is a third electrode. Design and operation of the interface as well as some preliminary results obtained by combining FIA and $\mu$-RPLC with CZE are shown.

Key words: Two dimensional systems / micro-LC / CZE / valveless interface.

© EDP Sciences, Wiley-VCH 1999