Abstract
In this study, UV-vis absorption, adsorption, z-average hydrodynamic diameter, zeta potential and DLVO interaction energy of engineered zinc oxide (ZnO) NP suspensions were investigated as a function of concentration of the NPs, ionic strength (IS) and natural organic matter (NOM). The results suggested that stability of ZnO NPs plays an important role on their mobility and determination of their resulting risks in aquatic ecosystems. Increasing stability of the ZnO NPs makes the NPs to be easily suspended and transported within the surface water. On the other hand, decreasing stability reduces the mobility of the NPs within the surface water due to aggregation, thereby blocking the NPs from reaching the water resources available for the production of drinking water and consequently reducing water contamination.
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