Dichlorodiphenyltrichloroethane (DDT) and Dichlorodiphenyldichloroethylene (DDE) levels in air and surface sea waters along the Antarctic Peninsula
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Archivos
Fecha
2023-12
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Elsevier Ltd
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Persistent organic pollutants (POPs) are widespread worldwide, even reaching polar regions. Among POPs, dichlorodiphenyltrichloroethane (DDT) and their metabolites have been reported scarcely in the Antarctic environment. Here we report the levels of p,p′-DDT, o,p′-DDT, p,p′-DDE, and o,p′-DDE in air and water samples collected during austral summer 2009. The levels found ranged from 0.25 to 4.26 pg m−3 in the atmospheric samples while in the water samples ranged from 0.07 to 0.25 pg L−1. These concentrations were within the range of the reported concentrations in the last 20 years in Antarctica. However, the source ratio showed that most of p,p′-DDT comes from fresh applications and Dicofol formulations. The back-trajectories estimated for the air masses revealed that most of the p,p′-DDT came from the continental Antarctic peninsula and surrounding waters. The diffusive exchange direction showed that Antarctic surface waters are the final sink of the studied compounds during the survey period. © 2023 Elsevier Ltd
Notas
Indexación: Scopus.
Palabras clave
Antarctica, DDT, Enantiomeric ratios, Organochlorine pesticides, Secondary sources
Citación
Marine Pollution Bulletin. Volume 197. December 2023. Article number 115699
DOI
10.1016/j.marpolbul.2023.115699