| 摘要 |
PROBLEM TO BE SOLVED: To simply, quickly and accurately provide a method for analyzing a trace residual portion in liquefied gas. SOLUTION: In this residual portion analytical method in a liquefied gas, the residual portion included in the liquefied gas is extracted into an organic solvent which is the liquid at an ordinary temperature and an normal pressure, and then the residual portion in the organic solvent is measured by a gas chromatograph method, to thereby measure and determine the residual portion in the liquefied gas.
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