Copolymer, and adsorbent or concentrating medium and needle for solid phase microextraction prepared using the copolymer

摘要

The invention provides a copolymer of methacrylic acid and ethylene glycol dimethacrylate which does not have any specificity to general organic solvents, can thus adsorb wide variety of the organic solvents, shows almost no desorption-adsorption hysteresis and therefore, is excellent in the desorption characteristics. It also provides a method for the preparation of the copolymer; an adsorbent or a concentrating medium comprising the copolymer; a loop used in an injector for chromatography which is packed with the adsorbent or concentrating medium; a needle for solid-phase microextraction (SPME) which is packed with the adsorbent or concentrating medium; a kit for the preparation of a sample comprising the needle for SPME; a method for concentrating a sample comprising the step of aspirating the sample into the large volume syringe of the kit for the preparation of a sample; a method for analyzing an analyte present in a sample which comprises the steps of aspirating a sample into the large volume syringe of the kit for the preparation of a sample.