  A method for obtaining the low chemical potential dependence of the dressed
quark propagator from an effective quark-quark interaction model is developed.
  From this the chemical potential dependence of the chiral quark condensate
and bag constant are evaluated. It is found that the chiral order parameter
decreases with the increasing chemical potential $\mu$, which is qualitatively
different from the results given by some authors in the literature. The reason
for this discrepancy is discussed.
