Abstract: A column packing material for supercritical fluid chromatography which allows good peak shape to be obtained in the analysis of free fatty acids, etc. and in the analysis of agricultural chemicals, etc., and has excellent durability for repeated analysis. The column packing material for supercritical fluid chromatography includes polymer particles containing cross-linked polymer, the degree of swelling of which after absorbing tetrahydrofuran and the degree of swelling of which after absorbing methanol are both 1.4 or less.

Abstract: A sample is stored in a container (125) disposed upstream of a back-pressure control valve (140). A mixed fluid of carbon dioxide in a supercritical state and a modifier is introduced into the container, and a component contained in the sample is extracted. The extracted component is introduced into a trap column (135) together with the carbon dioxide and the modifier and collected in the trap column. The trap column is loaded with polymer beads as a filler.

Abstract: A column packing material for supercritical fluid chromatography which allows good peak shape to be obtained in the analysis of free fatty acids, etc. and in the analysis of agricultural chemicals, etc., and has excellent durability for repeated analysis. The column packing material for supercritical fluid chromatography includes polymer particles containing cross-linked polymer, the degree of swelling of which after absorbing tetrahydrofuran and the degree of swelling of which after absorbing methanol are both 1.4 or less.

Abstract: The present invention provides a separation material including porous polymer particles that comprise at least one of styrene and divinylbenzene as a monomer unit at a proportion of 90% by mass or more based on the total amount of the monomers; and a coating layer that comprises a macromolecule having hydroxyl groups and covers at least a portion of the surface of the porous polymer particles, wherein the coating amount provided by the coating layer is 1 to 15 mg/m2 per unit specific surface area of the porous polymer particles.

Abstract: The present invention provides a separation material that comprises porous polymer particles comprising a styrene-based monomer as a monomer unit; and a coating layer comprising a macromolecule having hydroxyl groups, which covers at least a portion of the surface of the porous polymer particles, and the separation material has a 5% compressive deformation modulus of 100 to 1,000 MPa, and has a mode diameter in the pore size distribution of 0.1 to 0.5 ?m.

Abstract: The present invention provides a separation material comprising porous polymer particles that comprise a styrene-based monomer as a monomer unit; and a coating layer that comprises a macromolecule having hydroxyl groups and covers at least a portion of the surface of the porous polymer particles, wherein the rupture strength is 10 mN or higher.

Abstract: Disclosed is a separation material comprising: a porous polymer particle containing a crosslinked polymer containing a structural unit derived from a crosslinkable monomer having an aromatic group and two or more vinyl groups bonded to the aromatic group; and a coating layer coating at least part of the surface of the porous polymer. The coating layer contains a first graft chain that is a polymer having a hydroxyl group bonded to the crosslinked polymer, and a second graft chain that is a polymer having a hydroxyl group, bonded to the first graft chain, and being different from the first graft chain.

Abstract: A sample, carbon dioxide in a supercritical state, and a modifier are introduced into a separation column disposed on the upstream side of a back pressure control valve, and components included in the sample are separated. The separation column is packed with polymer beads as a packing material. The sample thus separated may be further supplied to an analysis by chromatography and/or a mass analysis.

Abstract: The present invention provides a separation material including porous polymer particles that comprise at least one of styrene and divinylbenzene as a monomer unit at a proportion of 90% by mass or more based on the total amount of the monomers; and a coating layer that comprises a macromolecule having hydroxyl groups and covers at least a portion of the surface of the porous polymer particles, wherein the coating amount provided by the coating layer is 1 to 15 mg/m2 per unit specific surface area of the porous polymer particles.

Abstract: The present invention provides a separation material that comprises porous polymer particles comprising a styrene-based monomer as a monomer unit; and a coating layer comprising a macromolecule having hydroxyl groups, which covers at least a portion of the surface of the porous polymer particles, and the separation material has a 5% compressive deformation modulus of 100 to 1,000 MPa, and has a mode diameter in the pore size distribution of 0.1 to 0.5 ?m.

Abstract: The present invention provides a separation material comprising porous polymer particles that comprise a styrene-based monomer as a monomer unit; and a coating layer that comprises a macromolecule having hydroxyl groups and covers at least a portion of the surface of the porous polymer particles, wherein the rupture strength is 10 mN or higher.