Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Perfluoroalkyl acids in Larus michahellis from Comacchio lagoon |
| Abstract | Perfluoroalkyl acids (PFAAs), such as perfluoroalkylsulfonic acids (PFSAs) and perfluoroalkylcarboxylic acids (PFCAs), are a group of chemicals used into a wide range of industrial and consumer products during the last six decades. They have aroused concern about their distribution in the environment and their potential bioaccumulation. This study is a preliminary investigation of the concentration of 11 PFAAs in yellow-legged gull (Larus michahellis) yolk from a colony settled on an island in the Comacchio lagoon (Italy). The eggs were taken from 19 three-egg clutches: 6 from first laid eggs (a-eggs), 9 from second laid eggs (b-eggs) and 4 from third laid eggs (c-eggs). The analyses of 8 PFCA and 3 PFSA were performed in yolk samples by liquid chromatography tandem mass spectrometry (HPLC-MS/MS) coupled to a turbulent flow chromatography (TFC) for the purification of the extracts. Mean PFAAs in a-eggs was 150 ± 107 ng/g yolk wet weight (ww), in b-eggs 209 ± 219 ng/g yolk ww and in c-eggs 179 ± 213 ng/g yolk ww. Perfluorobutane sulfonate (PFBS) and short-chain perfluorocarboxylic acids were not detected. Perfluorooctane sulfonate (PFOS) was the main compound detected in egg yolks followed by C10 - C11 - C12 perfluoroalkyl carboxylic acids. Our results are consistently with previous studies where PFOS was the predominant perfluorinated alkyl substance in eggs (range between 0.29-9453 ng/g ww) of diverse avian species from different geographic areas. |
| Source | XI Incontro dei Dottorandi in Ecologia e Scienze dei Sistemi Acquatici, Roma, Italy, 17-19 September 2015 |
| Keywords | PFASbioaccumulationegg |
| Year | 2015 |
| Type | Poster |
| Authors | Mazzoni M.1, Parolini M.2, Possenti C.D.2, Saino N.2, Valsecchi S.1 |
| Text | 347748 2015 PFAS bioaccumulation egg Perfluoroalkyl acids in Larus michahellis from Comacchio lagoon Mazzoni M.1, Parolini M.2, Possenti C.D.2, Saino N.2, Valsecchi S.1 1Water Research Institute National Research Council of Italy, IRSA CNR, Via Mulino, 19, 20861 Brugherio MB, Italy 2Universita degli Studi di Milano, Via Celoria 2, 20133 Milano, MI, Italy Perfluoroalkyl acids PFAAs , such as perfluoroalkylsulfonic acids PFSAs and perfluoroalkylcarboxylic acids PFCAs , are a group of chemicals used into a wide range of industrial and consumer products during the last six decades. They have aroused concern about their distribution in the environment and their potential bioaccumulation. This study is a preliminary investigation of the concentration of 11 PFAAs in yellow legged gull Larus michahellis yolk from a colony settled on an island in the Comacchio lagoon Italy . The eggs were taken from 19 three egg clutches 6 from first laid eggs a eggs , 9 from second laid eggs b eggs and 4 from third laid eggs c eggs . The analyses of 8 PFCA and 3 PFSA were performed in yolk samples by liquid chromatography tandem mass spectrometry HPLC MS/MS coupled to a turbulent flow chromatography TFC for the purification of the extracts. Mean PFAAs in a eggs was 150 ± 107 ng/g yolk wet weight ww , in b eggs 209 ± 219 ng/g yolk ww and in c eggs 179 ± 213 ng/g yolk ww. Perfluorobutane sulfonate PFBS and short chain perfluorocarboxylic acids were not detected. Perfluorooctane sulfonate PFOS was the main compound detected in egg yolks followed by C10 C11 C12 perfluoroalkyl carboxylic acids. Our results are consistently with previous studies where PFOS was the predominant perfluorinated alkyl substance in eggs range between 0.29 9453 ng/g ww of diverse avian species from different geographic areas. Published version XI Incontro dei Dottorandi in Ecologia e Scienze dei Sistemi Acquatici Roma, Italy 17 19 September 2015 Nazionale Contributo Poster PosterSITE2015_Uovagabbiano.pdf Poster MAZZONI MICHELA saramaria.valsecchi VALSECCHI SARA MARIA |