Blueshifts in absorption lines of quasi-stellar objects?

Possibility of misidentification of emission lines of QSOs and thereby miss ing detection of blueshifts have been suggested and demonstrated, in litera ture. It is shown here that absorption lines observed in the spectra of QSO s may also have been misidentified. Plenty search lines are available at hi gher wavelengths (red/IR regions) for identification with observed absorpti on lines, although lines from lower wavelengths (UV/blue regions) are alway s considered for identification. Re-examination of the published spectra of ten QSOs shows that the observed absorption lines can be interpreted as bl ueshifted, with same or better accuracy and sometimes more convincingly tha n redshifts. Objects on the sight line are identified with same emission bl ueshift as the blueshift of the absorption system of the QSO, the emission spectrum of the QSO itself being of course interpreted as blueshifted as we ll. It is proposed that the absorbers are probably linked with the QSO eith er physically or tidally/gravitationally as a result of some ejection mecha nism. The observed blueshifts of spectral lines in emission and absorption can be explained in a model comprising of multiple expanding universes.