Atmospheric abundances in post-AGB candidates of intermediate temperature

Detailed atmospheric abundances have been calculated for a sample of A-G su pergiant stars with IR fluxes and/or high galactic latitudes. HD 172481 and HD 158616 show clear indications of being post-AGB stars that have experie nced third dredge-up. HD 158616 is carbon-rich while the abundance pattern of HD 172481 and its large Li enhancement gives support to the hot bottom b urning scenario that explains paucity of carbon-rich stars among AGE stars. HD 172324 is very likely a hot post-AGE stat, that shuns a strong carbon d eficiency. HD 725, HD 218753 and HD 331319 also appear to be evolved object s between the red giant and the AGE. HD 9167, HD 173638 with a fen exceptio ns, reflect solar abundances and no signs of post red giant evolution. They are mast likely young massive disk supergiants. Further analysis of proto- Planetary Nebula HDE 341617 reveals that He lines show signs of velocity st ratification. The emission lines have weakened considerably since 1993. The envelope expands at 19 km s(-1) relative to the star. Atmospheric abundanc es, evolutionary tracks and isochrones are used to estimate masses and ages of all stars in the sample.