Inhaltszusammenfassung

The outbreak in the use of engineered nanoparticles enhances the risk that they reach the environment. Hence it is important to investigate fate of these nanoparticles in the environment. Their fate in environmental systems is strongly determined by changes in colloidal stability and their interaction with other environmental surfaces. In this study we investigated sorption of engineered silver nanoparticles from a stable suspension to model surfaces and environmental surfac...The outbreak in the use of engineered nanoparticles enhances the risk that they reach the environment. Hence it is important to investigate fate of these nanoparticles in the environment. Their fate in environmental systems is strongly determined by changes in colloidal stability and their interaction with other environmental surfaces. In this study we investigated sorption of engineered silver nanoparticles from a stable suspension to model surfaces and environmental surfaces by batch sorption studies. The model surfaces include sorbents with specific chemical functional groups and environmental surfaces include leaf and sand. Sorption of silver nanoparticles was nonlinear, it depends on the chemistry of sorbent surface, and can be described by a Langmuir model. Adhesive force measurement from AFM investigations was used to detect the presence of nanoparticles on the sorbent surface after sorption and this technique is proposed as a useful tool to describe the coverage of nanoparticles on different sorbent surfaces.» weiterlesen» einklappen

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