title: Polychlorinated biphenyls and DDT in swordfish (Xiphias gladius) and blue shark (Prionace glauca) from Brazilian coast.
abstract: The polychlorinated biphenyls (PCBs) and DDT may bioaccumulate in the aquatic food web and have been of great concern due to their toxic effects on wildlife and human health. There is evidence showing that fish in the human diet contributes at a significant proportion to the total intake of PCBs and other organochlorine compounds, particularly fish with higher fat levels. This study investigated the concentration of PCBs and DDTs in muscle tissues of samples of the blue shark (Prionace glauca) and a swordfish (Xiphias gladius) from east Brazilian coast and estimate the human exposure to total DDTs through the consumption of both the species. Samples of the each species were caught between August and September 2001. The mean concentration for summation operator PCBs in P. glauca was 3.15 ng/g w.w. and the summation operator DDTs was 0.93 ng/g w.w. The mean concentration of summation operator PCBs in X. gladius was 6.50 ng/g and the mean of summation operator DDTs was 2.47 ng/g. The estimated daily intake of summation operator DDT through X. gladius or P. glauca consumption can be considered safe since it contributes to less than 0.1% of the limit of acceptable daily intake (ADI) of summation operator DDT proposed by WHO.
authors.affiliation: Eduardo Penna Franca Laboratório de Radioisótopos, Instituto de Biofísica Carlos Chagas Filho, CCS-UFRJ, Rio de Janeiro, RJ, Brazil.
authors.forename: Claudio Eduardo
authors.initials: CE
authors.lastname: de Azevedo e Silva
authors.forename: Antonio
authors.initials: A
authors.lastname: Azeredo
authors.forename: José
authors.initials: J
authors.lastname: Lailson-Brito
authors.forename: João Paulo Machado
authors.initials: JP
authors.lastname: Torres
authors.forename: Olaf
authors.initials: O
authors.lastname: Malm
mesh_terms: D000818:Animals; D001938:Brazil; D003634:DDT / Q000032:analysis / Q000378:metabolism*; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D010473:Perciformes / Q000378:metabolism*; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000378:metabolism*; D012754:Sharks / Q000378:metabolism*; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*
chemical_list: D014874:Water Pollutants, Chemical; D003634:DDT; D011078:Polychlorinated Biphenyls