A Study on Analytic Method of Helium Isotope for Solid Sample

The helium isotope compositions vary in a wide range, 3He/4He =10-1~10-8. The helium from different source has different isotope composition. For this reason, helium isotope has been used as an important trace. However the helium isotope study is still in primary stage in China, and the work has been limited in study of gas samples. Analytic method of helium isotope for solid sample has been established in our laboratory. The total blanks for the procedure were 2(10-17cm3STP for 3He and 2(10-11cm3STP for 4He. The analytical precision of helium standard gas was 1%~5%. The helium isotope results of nodules in C-C Zone, eclogite in Dabie-Sulu region and mantle xenoliths and xenocrysts in Cenozoic basalt in eastern China were reported in paper.