[Application of extraction needle using selective and enhanced polymer in the analysis of samples containing poisonous material].

Low concentrations of gas components usually need to be condensed before analyzing them by gas chromatography (GC). Extraction Needle using Selective and Enhanced Polymer (EN-SEP) is a recently developed devise for condensing the components that are difficult to detect by using GC. EN-SEP consists of a needle which contains methacrylate co-polymer. Gas components are adsorbed and condensed on the polymer by passing through the needle. This paper describes the usefulness of EN-SEP in a criminal case. EN-SEP was successfully applied to condense and detect a trace of propylene glycol monomethyl ether contained in a soft drink by using gas chromatography/mass spectrometry.