1. Department of Chemistry, University of Texas at El Paso
2. Department of Chemistry, University of Puerto Rico at Mayaguez, Mayaguez, PR 00681
3. Departamento de Ingeniería Química, Universidad de Guanajuato, Col. N. Alta s/n, Guanajuato, Guanajuato 36050, Mexico
4. Environmental Sciences and Engineering Ph.D. Program