%0 Conference Proceedings %T Electrical Conductance study of interactions of Cu2+ , Co2+ and Ni2+ metal cations with kryptofix-21 in acetonitrile - ethanol binary solvent solution %A Sefaty, Banafsheh %A Ronaghi, Gholam Hossein %A M. Ebrahimi %J نوزدهمین سمینار شیمی تجزیه ایران %D 2013