[1] Univ Estadual Campinas, Inst Quim, CP 6154, BR-13083970 Campinas, SP, Brazil
[2] Univ Estatal Bolivar, Dept Invest, Campus Univ Laguacoto 2,Km 1,Via San Simon, Canton Guaranda, Provincia Boliv, Ecuador
[3] Univ Estadual Campinas, Inst Quim, Dept Quim Analit, Inst Nacl Ciencia & Tecnol INCT Bioanalyt, BR-13083970 Campinas, SP, Brazil
[4] Univ Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Dept Ciencias Exatas & Terra, Campus Diadema, BR-09972270 Diadema, SP, Brazil