Abstract: An arrangement for preparing samples and analyzing pesticides in samples contains an HILIC chromatography column with a first pump for a predominately low-water and/or non-polar solvent; and SPE enrichment arrangement; a second chromatography column with a second pump for a predominantly water-rich and/or polar solvent; a detector; and a valve arrangement for controlling the stream of sample and matrix, which valve arrangement is designed in such a way that the sample stream, in a first switching state of the valve arrangement, can be conducted from the HILIC chromatography column to the SPE enrichment arrangement and, in a second switching state, the sample enriched in the SPE enrichment arrangement can be conducted in the opposite direction from the SPE enrichment arrangement through the second chromatography column to the detector.

Abstract: Chromatography assembly for multi-dimensional chromatography, includes a first separating column (12; 112) for separating a sample into components; a second separating column (13; 114) having different separating characteristics for further separating the components separated in the first separating column (12; 112); a collecting volume (20; 120, 121) for collecting the components from the first separating column (12; 112) before entering the second separating column (14; 114); a switching assembly (22, 24; 122, 124) for switching from a first state (FIG. 1; FIG. 3), where the components leaving the first separating column (12; 112) are collected in the collecting volume (20; 120, 121) to a second state (FIG. 2; FIG. 4) where the components collected in the collecting volume (20; 120, 121) are transferred to the second separating column (14; 114); and a detector (18; 118) for detecting sample components leaving the second separating column (14; 114).

Abstract: An assembly for determining material properties and/or material concentrations of components of a sample, containing: a chromatographic separating column with a liquid mobile solvent; means for controlling the temperature inside the separating column between room temperature and 250° C.; means for creating a pressure level which is greater than ambient pressure inside the separating column; and a detector with a sample volume adapted to insert the components of the sample, is characterized in that the mobile solvent contains water to a large extent; means are provided for expanding the mobile solvent from the increased pressure level inside the separating column to the ambient pressure and for producing a phase change of the mobile solvent from the liquid to gaseous state; and means are provided for transferring the gaseous mobile solvent containing the components of the sample into the sample volume of the detector.

Abstract: Chromatography assembly for multi-dimensional chromatography, includes a first separating column (12; 112) for separating a sample into components; a second separating column (13; 114) having different separating characteristics for further separating the components separated in the first separating column (12; 112); a collecting volume (20; 120, 121) for collecting the components from the first separating column (12; 112) before entering the second separating column (14; 114); a switching assembly (22, 24; 122, 124) for switching from a first state (FIG. 1; FIG. 3), where the components leaving the first separating column (12; 112) are collected in the collecting volume (20; 120, 121) to a second state (FIG. 2; FIG. 4) where the components collected in the collecting volume (20; 120, 121) are transferred to the second separating column (14; 114); and a detector (18; 118) for detecting sample components leaving the second separating column (14; 114).

Abstract: An assembly for determining material properties and/or material concentrations of components of a sample, containing: a chromatographic separating column with a liquid mobile solvent; means for controlling the temperature inside the separating column between room temperature and 250° C.; means for creating a pressure level which is greater than ambient pressure inside the separating column; and a detector with a sample volume adapted to insert the components of the sample, is characterized in that the mobile solvent contains water to a large extent; means are provided for expanding the mobile solvent from the increased pressure level inside the separating column to the ambient pressure and for producing a phase change of the mobile solvent from the liquid to gaseous state; and means are provided for transferring the gaseous mobile solvent containing the components of the sample into the sample volume of the detector.