%0 Conference Proceedings %T construction an ion selective membrane electrode for lead (II) cation based ob benzo-18-crown-6 as an ionophore with polyvinylchloride matrix using of dip-coating method %A Ronaghi, Gholam Hossein %A M.Mohajeri %A S.Ghorbani %A Vatani, Hossein %J شانزدهمین سمینار شیمی تجزیه ایران دانشگاه بوعلی همدان %D 2009