| Abstract | Zooplankton is a key node in many trophic webs, both for food that for persistent organic contaminants that can accumulate in biota. Zooplankton of different size was seasonally sampled for two years in three deep Italian subalpine lakes (Maggiore, Como, Iseo) with the aim of determining the concentrations of perfluoroalkyl substances (PFAS), DDT, and PCB, and assessing the seasonality impacts on contaminants concentrations. In general, Lake Maggiore showed the highest concentrations for each group of contaminants, with mean values of 7.6 ng g ww for PFAS, 65.0 ng g dw for DDT, and 65.5 ng g dw for PCB. When considering the composition pattern, perfluorooctane sulfonate (PFOS) was detected in 96% of the samples and it was the predominant PFAS compound in all of the lakes. pp' DDE was the most detected congener among DDTs and their metabolites, while for PCBs, the prevalent group was hexa-CB that constituted 35.4% of the total PCB contamination. A seasonal trend was highlighted for all contaminant groups with concentrations in colder months greater than in spring and summer; it was evident that the contaminant concentrations were more dependent from seasonality than from size, trophic levels, and taxa composition of zooplankton. Principal component analysis showed that one of the main driver for the accumulation of most of the studied contaminants is their lipophilicity, except for perfluorooctanoic acid (PFOA) and octachlorobiphenyl. |
| Text | 407942 2019 10.3390/w11091901 Scopus 2 s2.0 85072169366 zooplankton perfluoroalkyl substances PFAS organochlorine compounds lakes Organic contaminants in zooplankton of Italian subalpine lakes Patterns of distribution and seasonal variations Pascariello S.; Mazzoni M.; Bettinetti R.; Manca M.; Patelli M.; Piscia R.; Valsecchi S.; Polesello S. Water Research Institute IRSA CNR, Via del Mulino 19, Brugherio MB , 20861, Water Research Institute IRSA CNR, Via del Mulino 19, 20861 Brugherio MB , Italy; pascariello@irsa.cnr.it S.P. ; valsecchi@irsa.cnr.it S.V. ; mmazzoni@studenti.uninsubria.it; polesello@irsa.cnr.it, , Italy; Department of human sciences and innovation for the territory DISUIT , University of Insubria, Via S. Abbondio 12, Como CO , 22100, Department of human sciences and innovation for the territory DISUIT , University of Insubria, Via S. Abbondio 12, 22100 Como CO , Italy; roberta.bettinetti@uninsubria.it, , Italy; Water Research Institute IRSA CNR, Largo Tonolli 50, Verbania Pallanza VB , 28922, Water Research Institute IRSA CNR, Largo Tonolli 50, 28922 Verbania Pallanza VB , Italy; marina.manca@irsa.cnr.it M.M. ; roberta.piscia@irsa.cnr.it R.P. , , Italy; Department of earth and environmental sciences DISAT , University of Milano Bicocca, Piazza della Scienza 1, Milano MI , 20126, Department of earth and environmental sciences DISAT , University of Milano Bicocca, Piazza della Scienza 1, 20126 Milano MI , Italy; m.patelli3@campus.unimib.it, , Italy Zooplankton is a key node in many trophic webs, both for food that for persistent organic contaminants that can accumulate in biota. Zooplankton of different size was seasonally sampled for two years in three deep Italian subalpine lakes Maggiore, Como, Iseo with the aim of determining the concentrations of perfluoroalkyl substances PFAS , DDT, and PCB, and assessing the seasonality impacts on contaminants concentrations. In general, Lake Maggiore showed the highest concentrations for each group of contaminants, with mean values of 7.6 ng g ww for PFAS, 65.0 ng g dw for DDT, and 65.5 ng g dw for PCB. When considering the composition pattern, perfluorooctane sulfonate PFOS was detected in 96% of the samples and it was the predominant PFAS compound in all of the lakes. pp DDE was the most detected congener among DDTs and their metabolites, while for PCBs, the prevalent group was hexa CB that constituted 35.4% of the total PCB contamination. A seasonal trend was highlighted for all contaminant groups with concentrations in colder months greater than in spring and summer; it was evident that the contaminant concentrations were more dependent from seasonality than from size, trophic levels, and taxa composition of zooplankton. Principal component analysis showed that one of the main driver for the accumulation of most of the studied contaminants is their lipophilicity, except for perfluorooctanoic acid PFOA and octachlorobiphenyl. 11 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85072169366 origin=inward Articolo in rivista Molecular Diversity Preservation International 2073 4441 Water Basel Water Basel Water Basel Water. Basel MAZZONI MICHELA PASCARIELLO SIMONA BETTINETTI ROBERTA marinamarcella.manca MANCA MARINA MARCELLA stefano.polesello POLESELLO STEFANO roberta.piscia PISCIA ROBERTA saramaria.valsecchi VALSECCHI SARA MARIA |
