Comparative supercritical-fluid chromatographic properties of carbon dioxide and sulphur hexafluoride-ammonia mixtures with packed columnsJ.L. Veuthey; J.L. Janicot; M. Caude; R. Rosset · 1990

Extraction of major alkaloids from poppy straw with near-critical mixtures of carbon dioxide and polar modifiersJ.L. Janicot; M. Caude; R. Rosset; J.L. Veuthey · 1990

Subcritical fluid extraction of opiates in hair of drug addictsP. Edder; C. Staub; J.L. Veuthey; I. Pierroz; W. Haerdi · 1994

Low-cost rapid separation and determination of ionic species by single-column ion chromatographyJ.L. Veuthey; J.P. Senn; W. Haerdi · 1988

Enrichment of complexing analytes on a copper-loaded silica surface and on-line coupling with high-performance liquid chromatography, using l-tryptophan and l-tyrosine as model compoundsJ.L. Veuthey; M.A. Bagnoud; W. Haerdi · 1987