Results and evaluation of the first study of organochlorine contaminants (PCDDs, PCDFs, PCBs and DDTs), heavy metals and metalloids in birds from Baja California, México.
Organochlorine compounds (OCs) including polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), polychlorinated biphenyls (PCBs) and 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p-p'-DDE), heavy metals (Pb, Cd, Zn, Cu), and arsenic were measured in house sparrows (Passer domesticus) and common ground doves (Columbina passerina) from Baja California Sur, México. Concentrations of PCDD/Fs were low, with 21 pg/g for house sparrows, and 7.7 pg/g for common ground doves. Non-ortho-PCB concentrations in house sparrow and common ground doves were 58 and 254 pg/g, respectively, and are within the highest concentrations reported in species that are in the low levels of food webs. The major differences in organochlorine levels between species were found for ortho-PCBs and DDTs. ortho-PCB levels were higher in the seedeater species, whereas DDT levels were higher in the omnivorous species. Heavy metal levels were far below those associated with negative effects.
Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain. bjimenez@iqog.csic.es
Begoña
B
Jiménez
Ricardo
R
Rodríguez-Estrella
Rubén
R
Merino
Gema
G
Gómez
Laura
L
Rivera
María
M
José González
Esteban
E
Abad
Josep
J
Rivera
D000818:Animals; D001151:Arsenic / Q000032:analysis; D001572:Benzofurans / Q000032:analysis; D001717:Birds; D002104:Cadmium / Q000032:analysis; D003300:Copper / Q000032:analysis; D003634:DDT / Q000032:analysis; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D004785:Environmental Pollutants / Q000032:analysis*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D007854:Lead / Q000032:analysis; D019216:Metals, Heavy / Q000032:analysis*; D008800:Mexico; D011078:Polychlorinated Biphenyls / Q000032:analysis; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D020308:Songbirds; D015032:Zinc / Q000032:analysis
D001572:Benzofurans; D004785:Environmental Pollutants; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D019216:Metals, Heavy; D000072317:Polychlorinated Dibenzodioxins; D002104:Cadmium; D007854:Lead; D003633:Dichlorodiphenyl Dichloroethylene; D003300:Copper; C023614:dibenzofuran; D003634:DDT; D011078:Polychlorinated Biphenyls; D015032:Zinc; D001151:Arsenic