Extract recovery method and analysis method using polymer beads in a trap when using supercritical extraction

A method for recovering an extracted component, the method comprising the steps of:

• introducing carbon dioxide in a supercritical state and a modifier into a container that is disposed upstream of a back-pressure control valve and stores a sample, and extracting an agricultural chemical component contained in the sample;
• introducing the agricultural chemical component that has been extracted into a trap column together with the carbon dioxide and the modifier, and collecting the agricultural chemical component in the trap column;
• and
• introducing an eluent into the trap column to elute the agricultural chemical component, and recovering the agricultural chemical component that has been eluted,
• wherein the trap column being loaded with polymer beads as a filler, and
• a crosslinked polymer contained in the polymer beads has a degree of crosslinking of 50% or more,
• wherein the agricultural chemical component is at least one selected from the group consisting of resmethrin, benthiocarb, bromophos-methyl, bifenthrin, tolchlofos-methyl, prothiofos, fenoxaprop-ethyl, nitralin, sulprophos, carbophenothion, hexythiazox, and silafluofen.