Comparison and Discussion of Measurement Results for Noble Gas in Natural Gas

This paper compares the data of the noble gas isotopic compositions in natural gas from China with the ones from Japan. Although the items measured to the noble gas isotopic compositions are less in China than in Japan, the former quality is reliable, and comparable with the later. This result is due to the lacks of a lower-temperature pump and a quadrupole mass spectrometer. It should be noted and improved.