%0 Journal Article %T Highly selective preconcentration of ultra-trace amounts of lead ions in real water and food samples by dispersive solid phase extraction using modified magnetic graphene oxide as a novel sorbent %A Akbarzadeh, Samaneh %A CHamsaz, Mahmod %A Ronaghi, Gholam Hossein %J Analytical Methods %@ 1759-9660 %D 2018