  Study of nucleosynthesis in accretion disks around black holes was initiated
by Chakrabarti et al. (1987). In the present work we do the similar analysis
using the state-of-the-art disk model, namely, Advective Accretion Disks.
During the infall, matter temperature and density are generally increased which
are first computed. These quantities are used to obtain local changes in
composition, amount of nuclear energy released or absorbed, etc. under various
inflow conditions. In the cases where the magnetic viscosity is dominant
neutron torus may be formed. We also talk about the fate of Li^7 and D during
the accretion. The outflowing winds from the disk could carry the new isotopes
produced by nucleosynthesis and contaminate the surroundings. From the degree
of contamination, one could pinpoint the inflow parameters.
