%0 Conference Proceedings %T Separation and Speciation of Tl(I) and Tl(III) in Environmental Samples using Amberlite IRC-718 Chelating Resin %A Ashraf, Narjes %A Arbab Zavar, Mohammad Hossein %A CHamsaz, Mahmod %A Abbas Youssefi %J 4th National Seminar on Chemistry and Environment %D 2010