UPTAKE AND ACCUMULATION OF SEDIMENT ASSOCIATED 4-NONYLPHENOL IN BENTHIC INVERTEBRATE (LUMBRICULUS VARIEGATUS, FRESHWATER OLIGOCHAETE) (Articolo in rivista)

Type
Label
  • UPTAKE AND ACCUMULATION OF SEDIMENT ASSOCIATED 4-NONYLPHENOL IN BENTHIC INVERTEBRATE (LUMBRICULUS VARIEGATUS, FRESHWATER OLIGOCHAETE) (Articolo in rivista) (literal)
Anno
  • 2005-01-01T00:00:00+01:00 (literal)
Alternative label
  • CROCE V., DE ANGELIS S., PATROLECCO L., POLESELLO S., VALSECCHI S. (2005)
    UPTAKE AND ACCUMULATION OF SEDIMENT ASSOCIATED 4-NONYLPHENOL IN BENTHIC INVERTEBRATE (LUMBRICULUS VARIEGATUS, FRESHWATER OLIGOCHAETE)
    in Environmental toxicology and chemistry
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • CROCE V., DE ANGELIS S., PATROLECCO L., POLESELLO S., VALSECCHI S. (literal)
Pagina inizio
  • 1165 (literal)
Pagina fine
  • 1171 (literal)
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  • 24(5) (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Croce Valeria, Department of Chemical, Physical and Mathematical Sciences, University of Insubria, Via Valleggio 11, I-22100, Como, Italy De Angelis Silvia, Patrolecco Luisa, Water Research Institute-C.N.R., Via Reno 1, I-00198 Roma, Italy Polesello Stefano, Valsecchi Sara, Water Research Institute-C.N.R., Via Mornera 25, I-20047 Brugherio Milan, Italy (literal)
Titolo
  • UPTAKE AND ACCUMULATION OF SEDIMENT ASSOCIATED 4-NONYLPHENOL IN BENTHIC INVERTEBRATE (LUMBRICULUS VARIEGATUS, FRESHWATER OLIGOCHAETE) (literal)
Abstract
  • In the present work, the oligochaete Lumbriculus variegatus was exposed for 56 d to lake sediment spiked with 4-nonylphenol (4-NP), which is a breakdown product of alkylphenol polyethoxylates, an important class of nonionic surfactants. During the exposure period, the content of 4-NP was determined in the oligochaetes, sediment, overlying water, and pore water in order to monitor the distribution of the 4-NP in the compartments of the test system. Concentration of 4-NP in L. variegatus increased linearly over the course of the test, with an uptake rate coefficient of 1.9 3 1022 (6 0.2 3 1022; [g carbon/(g lipid·h)]). No steady state was reached at the end of the exposure period, suggesting that the elimination of 4-NP by the organism was negligible. Ingested sediments played an important role in the accumulation of 4-NP in L. variegatus, which may achieve very high 4-NP body concentrations. The 56-d biota sediment accumulation factor (BSAF) was 24 6 7 g carbon/g lipid. L. variegatus also was exposed to 4-NP-contaminated field sediment, and field oligochaetes and sediments were collected for 4-NP pollution assessment in aquatic ecosystem. The 4-NP uptake with natural sediment was in accordance with that measured with spiked sediments, suggesting that the bioavailability of sediment-associated 4-NP for L. variegatus was not affected by 4-NP sediment concentration and abiotic sediment characteristics. The BSAFs measured in field ligochaetes, ranging from 39 to 55 g carbon/g lipid, was relatively higher than the bioaccumulation factor measured in laboratory tests. The results suggest that 4-NP concentration can reach high levels in benthic oligochaetes; this can be an mportant way of exposure for their pelagic predators. (literal)
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