No abstract

We found a mini-BAL between 4542 Å -4598 Å (in the observation frame) in the spectra of Quasar J024304.68+000005.4. This mini-BAL can be fitted very well using five Gaussian functions, which contains a pair of intrinsic CIVλλ1548,1551 narrow absorption doubles. The CIV absorbing material is at a red-shift of 1.942, and its relative velocity is 6750 km/s. In the timescale of 3629 MJD, the variation trends of the equivalent width of this mini-BAL are accordant with the CIVλλ1548,1551 narrow lines. For the five narrow Gaussian of the mini-BAL, we found that the smaller is the minimum of equivalent width of the Gaussian component, the greater is its variability amplitude. Our results provide useful data for the study of the origins of mini-BAL and of outflow absorption lines.