Stable Isotope Fractionation of C, H and O in Different Parts of Tree

Isotope ratio mass spectrometer was adopted to determine δ¹³C, δ¹⁸O and δ²H values in different parts of the tree. The findings indicated that the δ¹³C values in wood different part were the smallest, followed by the δ¹⁸O value and the δ²H value. For the 3 tree species of Hevea brasiliensis, Cassia siamea and Bauhinia blakeana, C and O are ideal elements for stable isotopic traceability of wood origin.