6533b822fe1ef96bd127ce04
RESEARCH PRODUCT
Organochlorinated pesticides in sediments from the Lake Albufera of Valencia (Spain).
M. De La GuardiaJ.m. CarrascoA. PastorS. RequenaE. Perissubject
DichlorodiphenyldichloroethaneGeologic SedimentsInsecticidesEnvironmental EngineeringHeptachlorHealth Toxicology and MutagenesisDichlorodiphenyl DichloroethyleneDDTchemistry.chemical_compoundDieldrinparasitic diseasesHydrocarbons ChlorinatedEnvironmental ChemistryAldrinPesticidesEcosystemPersistent organic pollutantPublic Health Environmental and Occupational HealthEnvironmental engineeringSedimentGeneral MedicineGeneral ChemistryPesticidePollutionFungicides IndustrialchemistrySpainEnvironmental chemistryEndrinEnvironmental scienceLindanedescription
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 between0.01 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-09-01 | Chemosphere |