... (min)abcdefabc+defcolumn-2400 × 4.6-mm 3- m0.5 mL/mincolumn-150 × 4.6-mm 3- m2.0 m/minwastedetectorcolumn-1switching valvecolumn-2samplevalveSSDColumn switching151015 ... 3.6.4.1, 16.9)• two-dimensional liquid chromatography (2D-LC) (Sections 9.3.10, 13. 4.5, 13. 10.4)• increased sampling rateThe use of column switching for sample preparation or 2D-LC usually involves ... Dorsey, J. Chromatogr. A, 965 (2002) 219.3. J. M. Berm´udez-Salda˜na, L. Escuder-Gilabert, R. M. Villanueva-Cama˜nas, M. J. Medina-Hern´andez, and S. Sagrado, J. Chromatogr. A, 1094 (2005)...