isotopeenrichmentfactor(ε)<0说明什么问题呢?The vapor-liquid X isotope enrichment factor (ε) is the best way to express the isotope fractionation effect (Hayes, 1993). The vapor-liquid X isotope enrichment factor (ε) 0, shows an inverse isotope fractionation effect. Hayes, J.M., 1993. Factors controlling 13C contents of sedimentary organic-compounds: principles and evidence In: R.J. Parkes, P. Westbroek and J.W. de Leeuw (Editors), Marine Sediments, Burial, Pore Water Chemistry, Miicrobiology and Diageneses. Marine Geology, 113: 111-12查看更多