Déniz R del T, Echevarría MS, Terra ZF, Espinosa AMP, de Moya H. Use of modified silica gel for concentrating Pb (II) and Cd (II) occurring in form of complex anions. Eclet. Quim. [Internet]. 2007 Jun. 26 [cited 2024 Nov. 23];32(2):13-6. Available from: https://revista.iq.unesp.br/ojs/index.php/ecletica/article/view/361