METHOD AND SYSTEM FOR MEASURING ISOTOPE PRESENCE RATIO OF GAS

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring the isotope presence ratio of gas containing impurities near to methane and the isotope of another gas in mass number without modifying methane or acquiring an instrument such as the six-way valve or measuring pipe provided in a general gas chromatograph apparatus, and a system therefor.;SOLUTION: The system is constituted so that an impurities removing pipe formed by filling the conduit, which reaches a mass analyzer from a measuring gas container with an adsorbent is arranged and a conduit for supplying gas not approaching the mass number of a measuring gas is made to face the conduit to the impurities removing pipe and the gas not approaching the mass number of the measuring gas is always supplied under atmospheric pressure. This system is used to allow the measuring gas to flow while allowing the gas not approaching the mass number of the measuring gas to flow to the impurities removing pipe and the pressure of the gas flowing in the mass analyzer is always set to atmospheric pressure to measure the isotope presence ratio.;COPYRIGHT: (C)2006,JPO&NCIPI