Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2011
Authors
Christian Guido Bruckner Jana Lange Stephanie Markert Kerstin Mammitzsch Günter Jost Dörte Becher Thomas Schweder Matthias Labrenz Klaus JürgensAbstract
No abstract has been registered
Authors
Christian Guido Bruckner Charlotte Rehm Hans-Peter Grossart Peter, G. KrothAbstract
No abstract has been registered
Authors
Margarita Novoa-Garrido Celine Rebours Ingunn Øvsthus Marte Meland Christian Uhlig Åsbjørn KarlsenAbstract
No abstract has been registered
Authors
Ragnhild Aabøe Inglingstad Binyam Sime Dagnachew Tove Gulbrandsen Devold Andrea Criscione Bernardo Valenti Siv Borghild Skeie Håvard Steinshamn Gerd Elisabeth VegarudAbstract
No abstract has been registered
Authors
Jack D'Arcy Evgenia Dunaevskaya J.W. Treasurer Oddvar Ottesen Richard Fitzgerald Åsbjørn Karlsen Celine Rebours Julie Maguire Nonna ZhuravlevaAbstract
No abstract has been registered
Abstract
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.
Authors
Rolf Nestby Marianne ØsterlieAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Stein Øvergaard Juan Antonio Fernandez-Pierna Vincent Baeten Pierre Dardenne Tomas IsakssonAbstract
No abstract has been registered
Authors
Arild AndersenAbstract
No abstract has been registered