Bioaccumulation and biomagnification of emerging and classical flame retardants in bird eggs of 14 species from Doñana Natural Space and surrounding areas (South-western Spain).
The occurrence of classical (polybrominated diphenyl ethers, PBDEs) and emerging FRs (dechloranes, hexabromobenzene (HBB), pentabromoethyl benzene (PBEB) and decabromodiphenyl ethane (DBDPE)) in unborn eggs of 14 different species from Doñana Natural Space and surrounding areas was studied. PBDEs, Dec-602, Dec-603 and DP were detected in all the species, whereas HBB, PBEB, DBDPE and Dec-604 were not detected in any sample. ΣPBDE and ΣDechlorane levels ranged from 1.40 to 90.7, and from 0.77 to 260 ng/g lw, respectively. BDE-209 was the most abundant BDE congener in almost all the species, whereas Dec-602 was the predominant among dechloranes. In general, levels of PBDEs and dechloranes were similar and even higher for dechloranes, probably indicating the increasing use of dechloranes as a result of legal restrictions on PBDEs. In both cases, the most contaminated specie was the white stork. Using stable isotope characterization, differences among species and possible biomagnification processes were also evaluated. PBDE levels increased as the trophic position increased, showing biomagnification capacity. The same behavior was observed for Dec-602 and Dec-603; however, DP levels were not linearly correlated with trophic level. These results show that more attention should be given to emerging FRs such as dechloranes since they show similar environmental behavior as PBDEs.
['Barón|E|E|', 'Máñez|M|M|', 'Andreu|A C|AC|', 'Sergio|F|F|', 'Hiraldo|F|F|', 'Eljarrat|E|E|', 'Barceló|D|D|']
D000393:Air Pollutants D000818:Animals D001717:Birds D002247:Carbon Isotopes D004784:Environmental Monitoring D005411:Flame Retardants D008401:Gas Chromatography-Mass Spectrometry D055768:Halogenated Diphenyl Ethers D006843:Hydrocarbons, Chlorinated D007553:Isotope Labeling D010063:Ovum D011083:Polycyclic Compounds D013030:Spain
Biomagnification PBDEs Dechloranes Isotope analysis