%0 Journal Article %T Use of Functionalized Resin for Matrix Separation and Trace Elements Determination in Petroleum Produced Formation Water by Inductively Coupled Plasma Mass Spectrometry %A Ricardo Erthal Santelli %A Aline Soares Freire %A Eliane Padua Oliveira %A Valfredo Azevedo Lemos %J ISRN Analytical Chemistry %D 2012 %I Hindawi Publishing Corporation %R 10.5402/2012/764271 %U http://dx.doi.org/10.5402/2012/764271