USF St. Petersburg campus Faculty Publications


Organochlorine pesticides and PCBs in air in southern Mexico: 2002-2004.

SelectedWorks Author Profiles:

Henry A. Alegria

Document Type


Publication Date





Air samples were collected in southern Mexico in 2002–2004 to determine the extent of contamination with organochlorine (OC) pesticides and polychlorinated biphenyls (PCBs). The ΣDDTs ranged from 239 to 2360 pg m−3. Other prominent OC pesticides were endosulfans, toxaphene and lindane. Pesticides detected in lower concentrations include chlordanes, dieldrin, and heptachlor. Proportions of DDT compounds suggested fresh use of DDT in some locations and a mix of fresh and aged residues at others. Ratios of trans-chlordane/cis-chlordane were consistent with fresh chlordane usage or emission of residues from former termiticide applications. The ΣPCBs was relatively low at all sites. Concentrations of OC pesticides measured with passive samplers agreed well with those measured using high-volume samplers. Air back trajectory analysis suggests a complex pattern of regional atmospheric transport.


Abstract only. Full-text article is available through licensed access provided by the publisher. Published in Atmospheric Environment, 42(38), 8810-8818. doi: 10.1016/j.atmosenv.2008.04.053. Members of the USF System may access the full-text of the article through the authenticated link provided.


Pergamon Press

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.