期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 423, 期 -, 页码 162-167出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2012.02.045
关键词
Damselfly larvae; Biomonitoring; Polychlorinated biphenyls; Organochlorine pesticides; Polybrominated diphenyl ethers; Ponds
资金
- Research Scientific Foundation of Flanders (FWO)
- Research Foundation-Flanders (FWO)
- FWO-Flanders [G018509N]
We investigated the accumulation of persistent organic pollutants in damselfly larvae (Ischnura elegans) in sixteen ponds in Flanders (Belgium), widely differing in the surrounding land use. Concentrations of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) and hexachlorobenzene (HCB) were measured. From all targeted PBDE-congeners, only three congeners (IUPAC nos. 47, 99, 100) were above the limit of quantification (LOQ). The Sigma PBDE concentrations ranged from LOQ (0.20 ng g(-1) ww) with values up to 3.30 ng g(-1) ww in the pond at Hamme. In fifteen ponds, the HCB concentrations were >LOQ (0.05 ng g(-1) ww) with values up to 0.24 ng g(-1) ww. For the available data in the literature a comparison with different species was done for some of the sampled ponds. The monitored ponds can be separated in three groups based on their contamination. The first group is characterised by a relative low POP content (Sigma PBDEs, Sigma PCBs, HCB). Group 2 contained more HCB and pp'-DDE than the overall mean while this was the case for PBDEs and PCBs in group 3. The vectors of both contaminated groups are situated nearly perpendicular which is suggesting a different pollution sources. (C) 2012 Elsevier B.V. All rights reserved.
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