In the gas chromatograph measuring method which uses the concentrated tube and its concentrated tube and the gas chromatograph

摘要

PROBLEM TO BE SOLVED: To realize a concentration pipe capable of measuring a minute amount of impurities contained in a hydrogen gas by neither enhancing the sensitivity of a detector nor increasing the volume of a measuring pipe, a gas chromatograph measuring method, and a gas chromatograph measuring instrument.;SOLUTION: The concentration pipe is used for the concentration of a sample in the gas chromatograph measuring instrument and incorporates a hydrogen-permeable membrane.;COPYRIGHT: (C)2007,JPO&INPIT