The T-eff, log g, v sini values and abundances of some elements in the
atmospheres of 7 galactic field blue stragglers (detected by Olsen E.
H., AandAS, 1980, 39, 205) have been determined on the basis of spectr
a obtained with 6m telescope. The main results are: (1) Values of iron
abundance for the investigated stars vary from [Fe/H]=-0.9 dex to [Fe
/H]=-0.3 dex. A preliminary interpretation of this fact could be that
field blue stragglers group consists of stars with different ages. (2)
The abundances of Mg and Ca (relative to iron) exceed the solar value
s. These overabundances are in promising agreement with theoretical pr
ediction of production of these elements by SNeII explosive nucleosynt
hesis.