Organochlorinated pesticides in sediments from the Lake Albufera of Valencia (Spain).
Chemosphere
; 60(11): 1542-9, 2005 Sep.
Article
en En
| MEDLINE
| ID: mdl-16083760
Bottom sediment samples from 121 sites of the Lake Albufera of Valencia were analyzed. Dieldrin, endrin, heptachlor and op'-DDT were not detected (<0.01 ng g(-1)) in 88-93% of the sites. Aldrin and HCB concentration ranges were between <0.01 and 0.1 ng g(-1) in 86% and 94% of the sites, respectively. Heptachlor-epoxide and lindane 95% confidence intervals were 0.2-0.5 and 0.06-0.12, respectively. The greatest average concentration corresponds to pp'-DDE, pp'-DDD and pp'-DDT. The sum of six isomers and derivatives of the DDT average concentration reaches 2.1 ng g(-1), as opposed to 2.7 ng g(-1) for the sum of 13 pesticides considered. In the site with a major contamination, 27.0 ng g(-1) of pp'-DDD and 12.8 ng g(-1) of pp'-DDT were accumulated. The DDE:DDT proportion average was 0.37, indicating an aged DDT contamination. Concentrations of pesticides in sediments were compared to three sediment quality guidelines, and indicated that a low biological effects level can be expected in either sediments or aquatic organisms.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Plaguicidas
/
Sedimentos Geológicos
/
Hidrocarburos Clorados
País/Región como asunto:
Europa
Idioma:
En
Revista:
Chemosphere
Año:
2005
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Reino Unido