1. Departamento de Química Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto Universidade de São Paulo Ribeirão Preto Sao Paulo 14040‐901 Brazil
2. National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT–DATREM) UNESP, Institute of Chemistry Araraquara Sao Paulo 14800–900 Brazil