  Recent analyses of solar photospheric abundances suggest that the oxygen
abundance in the solar atmosphere needs to be revised downwards. In this study
we investigate the consequence of this revision on helioseismic analyses of the
depth of the solar convection zone and the helium abundance in the solar
envelope and find no significant effect. We also find that the revised
abundances along with the current OPAL opacity tables are not consistent with
seismic data. A significant upward revision of the opacity tables is required
to make solar models with lower oxygen abundance consistent with seismic
observations.
