Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2012
Sammendrag
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2011
Sammendrag
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Forfattere
Ragnhild Aabøe Inglingstad Binyam Sime Dagnachew Tove Gulbrandsen Devold Andrea Criscione Bernardo Valenti Siv Borghild Skeie Håvard Steinshamn Gerd Elisabeth VegarudSammendrag
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Forfattere
Jack D'Arcy Evgenia Dunaevskaya J.W. Treasurer Oddvar Ottesen Richard Fitzgerald Åsbjørn Karlsen Celine Rebours Julie Maguire Nonna ZhuravlevaSammendrag
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Sammendrag
Due to sewage sludge application on soils, terrestrial ecosystems are very likely to be exposed to silver nanoparticles (AgNPs) and it is thus important to understand the behavior of Ag NPs once in contact with soil components. The aim of this work was to compare the behavior of silver under three forms, silver nitrate, citrate stabilized AgNPs (C-ANPs) and uncoated AgNPs (P-AgNPs), in two soils with contrasting organic matter content, and over time. The physical and chemical properties of the studied soils as well as the nanoparticles size, shape, crystallographic structure and specific surface area were characterized. Soil samples were spiked with silver nitrate, C-AgNPs or P-AgNPs, and let for ageing 2 hours, 2 days, 5 weeks or 10 weeks before they were submitted to sequential extraction. The ionic silver solution and the two AgNPs types were radiolabeled so that we could detect and quantify silver by gamma spectrometry by measuring the 110mAg tracer in the different sequential extraction fractions. We thereby obtained for each silver form, soil type and time point a distribution of silver in the different fractions. Silver was generally more mobile in the mineral soil, although the fractionation patterns were very different for the three silver types in both cases. Over 20% of the total C-AgNPs concentration were water soluble in both soils (<5% for AgNO3 and P-AgNPs) the first two days after spiking, but the fraction decreased to trace levels thereafter. This was compensated by an increase in the reducible fraction. Regarding P-AgNPs, 80% were not extractable at all, but contrary to AgNO3 and C-AgNPs, the water soluble and ion exchangeable fractions did not decrease over time in the mineral soil, and even increased in the organic soil.
Forfattere
Rolf Nestby Marianne ØsterlieSammendrag
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Sammendrag
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Forfattere
Stein Øvergaard Juan Antonio Fernandez-Pierna Vincent Baeten Pierre Dardenne Tomas IsakssonSammendrag
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Forfattere
Arild AndersenSammendrag
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2007
Forfattere
Håkan Broman Mikael Frisk Mikael RönnqvistSammendrag
Det er ikke registrert sammendrag