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Publikationstyp
Wissenschaftlicher Artikel
Erscheinungsjahr
Autor:innen
Herausgeber
Quelle
European Journal of Soil Science
66 (2015), H. 5
66 (2015), H. 5
Schlagwörter
Förderkennzeichen (FKZ)
Forschungskennzahl
Zitation
Remobilization of sterically stabilized silver nanoparticles from farmland soils determined by column leaching. (2015). European Journal of Soil Science, 66 (2015), H. 5. https://doi.org/10.60810/openumwelt-1265
Zusammenfassung englisch
The increasing application of silver (Ag)-engineered nanoparticles (ENP) will enhance their release to the aquatic and terrestrial environments. Hence, the retention potential of the sterically stabilized Ag ENP (AgNM-300k, Organisation for Economic Cooperation and Development (OECD)) standard material was tested in a sandy Cambisol and in a clay- and silt-rich Luvisol. In addition, the remobilization potential of the same soils spiked with AgNM-300k was investigated in columns after 3 and 92?days of incubation. The AgNM-300k dispersion and the soil solutions were examined with dynamic light scattering (DLS). Inductively coupled plasma optical emission spectroscopy (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS) were used to analyse soils and soil solutions subjected to different digestion and extraction techniques (aqua regia, nitric acid (HNO3) and EDTA (ethylenediamninetetraacetate)). The 24-hour batch test showed a 10-fold greater retention coefficient for AgNM-300k in the silt- and clay-rich Luvisol than in the sandy Cambisol. In addition, all applied extraction techniques indicate a greater potential for mobility of Ag ENP for the sandy Cambisol. However, a small release from the column of AgHNO3 (measured Ag content in the fraction