Characteristics and implications of the carbon isotope fractionation of desorbed coalbed methane in Qinshui coalbed methane field;

Study and application of carbon isotope fractionation during the reduction process from CO_2 to CH_4.;

Based on this,kinetic models for describing gas generation from oil cracking and carbon isotope fractionation during this process were established,calibrated and then applied to Luojia 7 well located in the Luojiazhai gas field respectively.

The effects of element sulfur on carbon isotopic fractionation of methane have been systematically studied by the simulation experiments of thermal transformated methane from organic matter.

Because of the special feature with the multivalences,multi-mass number and larger isotopic fractionation,Se isotopes have caused more attention.

The isotopic fractionation under microbial actions belongs to the kinetic isotopic fractionation,which results in the enrichment of heavier isotopes in .

There exist possible isotopic fractionation effects in generation-expulsion process of terrestrial source rocks.

Through acetone via 2,4-dinitrophenylhydrazine(DNPH)derivatization,it was found that isotope fractionation values were so little as to be ignored during the whole reaction process,the derivatization process showed that no carbon isotope fractionation occurred for acetone within the precision limits of the GC/C/IRMS system(<0.

The researchful status of the isotope fractionation the stable isotopes in tracing to sources and trailing pollutant,specially in apportioning the atm.

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.