The free carbon and hydrogen isotopes in n-alkane from the Paleozoic source rocks in Huanghua depression are determined using techniques of GC-IRMS and GC-TC-IRMS to reveal the isotope compositions in different sedimentary environments.

Palladium-hydrogen system has the largest isotope effect in the metal-(hydrogen) systems so far as we know,so palladium is widely used in hydrogen isotopes(disposal) technology.

In addition,the experiment working standard of H2 was certified by H2 /H2O(l) equlibrium H/D isotope analysis associating with hydrogen isotope fractionation equilibrium.

Separation of hydrogen isotopes with low temperature adsorption;

The principle of gas chromatographic separation of hydrogen isotopes was briefly introduced.

The static differential pressure method is used to study the cryogenic adsorption of hydrogen isotopes on the carbonaceous adsorbents, including activated carbon(AC), carbon molecular sieve(601) and carbon nanofibers(CNF).

The hydrogen and oxygen isotope exchange kinetic and its geological significance;

The mean values from 26 samples of hydrogen and oxygen isotope compositions of diaspore in bauxite ores of Shanxi are that:8.

This paper summarizes both methods for the study of hydrogen and oxygen isotope diffusion kinetic parameters: conventional mass spectrometry analysis method with integral diffusion equation; the ion microprobe analysis method with the differential diffusion equation.