%0 Conference Proceedings %T Competitive Taransport of Seven meta lCations through a Bulk Liquid Membrane Using 5, 12- Di(phenoxymethyl)-1,4-dioxa-7,10-dithiacyclodod- ecane-2,3-dione as Carrier %A Hosseiny, Malihe Sadat %A Ronaghi, Gholam Hossein %J 16th Iranian Seminar of Analytical Chrmistry %D 2009