Removal of lead contaminant from Cr surfaces by using H2O2/EDTA cleaner solution.

All industrial processes especially metal cleaning procedures dealing with dangerous solutions should be used as little as possible and their emission into the aquatic environment should be controlled. In this study, in order to find a proper and efficient cleaning process, lead pollution was removed from the solid matrix by using a cleaner solution containing EDTA and H2O2 as chelating and oxidizing agents respectively. An orthogonal array design (OAD), OA9, was employed as a chemometric method for the optimization of the procedure.