Chemistry Faculty, Autonomous University of Carmen, Ciudad del Carmen, Campeche, Mexico;
Mexican Institute of Petroleum, Marine Zone, Ciudad del Carmen, Campeche, Mexico;
Sciences of Health Faculty, Autonomous University of Carmen, Ciudad del Carmen, Campeche, Mexico;
Center of Environmental Sciences Research, Autonomous University of Carmen, Ciudad del Carmen, Campeche, Mexico;
Atmospheric; Deposition; Critical; Loads; Sulfur; Campeche; Mexico;