1. Exact Sciences Division, Department of Chemistry; University of Guanajuato; Guanajuato México
2. Department of Food; University of Papaloapan; Tuxtepec Oaxaca México
3. Laboratorio Nacional de Investigaciones en Forense Nuclear (LANAFONU). Instituto Nacional de Investigaciones Nucleares (ININ), Carretera México-Toluca S/N 52750; La Marquesa Ocoyoacac; Estado de México México