TY - JOUR T1 - Use of Doehlert and constrained mixture designs in the development of a photo-oxidation procedure using UV radiation/H2O2 for decomposition of landfill leachate samples and determination of metals by flame atomic absorption spectrometry JO - Anais da Academia Brasileira de Ciências A1 - Bezerra, Marcos A. A1 - Souza, Antônio D.S. A1 - Oliveira, Rafael V. A1 - Oliveira, Djalma M. A1 - Cardoso, Luiz A.M. A1 - Sousa Filho, Hélio R. SN - 0001-3765 UL - 10.1590/0001-3765201520140258 VL - 87 Y1 - 2015 PB - Brasil ER -