%0 Journal Article %T Competitive Transport Studies of Seven Metal Cations Through Bulk Liquid Membrane Using 1,4-Dioxa-7,10-dithiacyclododecane-2,3-dione %A Ronaghi, Gholam Hossein %A Hosseiny, Malihe Sadat %A Sadeghian, Hamid %J Asian Journal of Chemistry %@ 0970-7077 %D 2009