Abstract: A packing material for liquid chromatography, which is excellent in durability, and a column for liquid chromatography, which is filled with the packing material, are provided. The packing material for liquid chromatography is characterized by comprising a hydrophilic resin containing a polyvinyl alcohol resin, to said hydrophilic resin an amino group represented by the formula (1) having been bonded through a spacer. In the formula (1), R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 represents an alkyl group having 1 to 6 carbon atoms and having one or more hydroxyl groups, and ? represents a bonding position to the spacer.

Abstract: One object of the present invention is to produce a weakly acidic cation exchanger under mild conditions. Another object of the present invention is to produce a more firm weakly acidic cation exchange film. Still another object of the present invention is to provide a weakly acidic cation exchanger capable of realizing high-level separation of monovalent cation and simultaneously analyzing monovalent cation and divalent cation and also provide a chromatography column using the ion exchanger. In the production method of a weakly acidic cation exchanger of the invention, a solvent incapable of dissolving a polymer having a double bond within the molecule is used and the weakly acidic cation exchanger is produced by polymerization at temperature of 100° C. or less.

Abstract: A packing material for liquid chromatography, which is excellent in durability, and a column for liquid chromatography, which is filled with the packing material, are provided. The packing material for liquid chromatography is characterized by comprising a hydrophilic resin containing a polyvinyl alcohol resin, to said hydrophilic resin an amino group represented by the formula (1) having been bonded through a spacer. In the formula (1), R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 represents an alkyl group having 1 to 6 carbon atoms and having one or more hydroxyl groups, and ? represents a bonding position to the spacer.

Abstract: One object of the present invention is to produce a weakly acidic cation exchanger under mild conditions. Another object of the present invention is to produce a more firm weakly acidic cation exchange film. Still another object of the present invention is to provide a weakly acidic cation exchanger capable of realizing high-level separation of monovalent cation and simultaneously analyzing monovalent cation and divalent cation and also provide a chromatography column using the ion exchanger. In the production method of a weakly acidic cation exchanger of the invention, a solvent incapable of dissolving a polymer having a double bond within the molecule is used and the weakly acidic cation exchanger is produced by polymerization at temperature of 100° C. or less.

Abstract: One object of the present invention is to produce a weakly acidic cation exchanger under mild conditions. Another object of the present invention is to produce a more firm weakly acidic cation exchange film. Still another object of the present invention is to provide a weakly acidic cation exchanger capable of realizing high-level separation of monovalent cation and simultaneously analyzing monovalent cation and divalent cation and also provide a chromatography column using the ion exchanger. In the production method of a weakly acidic cation exchanger of the invention, a solvent incapable of dissolving a polymer having a double bond within the molecule is used and the weakly acidic cation exchanger is produced by polymerization at temperature of 100? ° C. or less. When an ?,?-unsaturated dibasic acid derivative is dissolved in the solvent, the ?,?-unsaturated dibasic acid derivative reacts with the polymer and a more firm film can be formed.

Abstract: One object of the present invention is to produce a weakly acidic cation exchanger under mild conditions. Another object of the present invention is to produce a more firm weakly acidic cation exchange film. Still another object of the present invention is to provide a weakly acidic cation exchanger capable of realizing high-level separation of monovalent cation and simultaneously analyzing monovalent cation and divalent cation and also provide a chromatography column using the ion exchanger. In the production method of a weakly acidic cation exchanger of the invention, a solvent incapable of dissolving a polymer having a double bond within the molecule is used and the weakly acidic cation exchanger is produced by polymerization at temperature of 100° C. or less.

Abstract: The invention relates to an analysis method which can conduct analysis on low molecular weight compound in a sample containing water-soluble polymer and low molecular weight compound under isocratic conditions without being affected by proteins or the like and in which water-soluble polymer and low molecular weight compound can be separated efficiently and to a column for such an analysis by high performance liquid chromatography, packed with a packing material comprising a crosslinked organic polymer compound obtained by polymerizing glycerin dimethacrylate at 90 mass % or more as starting material, having the exclusion limit molecular weight measured with pullulan of 30000 or less but 3000 or more and having a mass average particle diameter of 0.1 to 100 ?m.

Abstract: The present invention relates to a packing material for ion chromatography, wherein a quaternary ammonium base represented by the following formula (1) is bonded to the substrate directly or through a spacer: wherein R1 represents a group having at least one olefinic double bond or conjugated double bond, each R2 and R3 independently represents an organic residue which may be the same with or different from R1; and separating equipment for chemical substances and a separating method using the packing material. The packing material for ion chromatography, separating equipment for chemical substances and a separating method using the packing material of the present invention, enable to sufficiently separate seven standard inorganic anions and three halogen oxide anions in either of the conductometric detection or ultraviolet detection by postcolumn derivatization while preventing increase in the pressure and imposing no limitations on the measurement temperature or flow rate of mobile phase.

Abstract: One object of the present invention is to produce a weakly acidic cation exchanger under mild conditions. Another object of the present invention is to produce a more firm weakly acidic cation exchange film. Still another object of the present invention is to provide a weakly acidic cation exchanger capable of realizing high-level separation of monovalent cation and simultaneously analyzing monovalent cation and divalent cation and also provide a chromatography column using the ion exchanger. In the production method of a weakly acidic cation exchanger of the invention, a solvent incapable of dissolving a polymer having a double bond within the molecule is used and the weakly acidic cation exchanger is produced by polymerization at temperature of 100? ° C. or less. When an ?,?-unsaturated dibasic acid derivative is dissolved in the solvent, the ?,?-unsaturated dibasic acid derivative reacts with the polymer and a more firm film can be formed.

Abstract: A method for measuring anions by suppressor-system or non-suppressor-system ion chromatography includes measuring halogen oxide ions with a column for ion chromatography, which is packed with an alkali-resistant anion exchanger including porous polymer particles, in combination with one or more eluents, the porous polymer particles including an alkali-resistant polymer substrate having bonded thereto through a spacer a nitrogen-containing heterocyclic group having a quaternary ammonium structure.

Abstract: A porous polymer particle includes an alkali-resistant polymer substrate having bonded thereto through a spacer a nitrogen-containing heterocyclic group containing a quaternary ammonium structure.

Abstract: The present invention provides a vehicle travel position marker and method for confirming vehicle travel position for correct, visual confirmation of tire position and vehicle width, which before now could only be sensed. The present invention relates to a method for confirming vehicle travel position wherein markers 2a and 2b are established at positions, at or near the inside bottom of the vehicle A windshield 1, appearing from the driver's seat to lie over lines extending from the right and left tires 3a and 3b of the vehicle A, and the vehicle is operated using the markers 2a and 2b as signs for the positions through which the right and left tires 3a and 3b will pass. The present invention also relates to vehicle travel position markers used in the method for confirming vehicle travel position.