1. Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques; BP 384 Bou-Ismail RP 42004 Tipaza Algeria
2. Laboratoire E.P.C.M.A.E., Faculté de Chimie; USTHB; BP 32 El Alia Bab Ezzouar 16111 Alger Algeria
3. Nireas-International Water Research Centre; University of Cyprus; P.O. Box 20537 CY-1678 Nicosia Cyprus
4. Department of Civil Engineering and Environmental Engineering; University of Cyprus; P.O. Box 20537 CY-1678 Nicosia Cyprus