Nanoparticles (NPs) have recently been concerned as emerging contaminants. Determination of NPs in different environmental
compartments is a revealing topic for researchers studying their impacts in nature. Various methods of analysis have been reported
in literature for their measurement and recovery. However, there are difficulties in their quatification in landfill leachate. Taking
into account varying landfill components and their possible interactions with NPs, different types of NPs were investigated in this
study. Total concentrations of metals from commonly used TiO2, ZnO (coated and uncoated), and SiO2 NPs were quantified in
deionized water and in two different types of landfill leachate. Percent recoveries of metals from different NPs i.e., ZnO and TiO2
added to deionized water ranged between 76%-129%, whereas percent recoveries in leachate were generally less around 45%-99%.
On the other hand, the percent recovery results of SiO2 were quite high in the range of 65%-99% and comparable to those in
deionized water. Considering the complex nature of leachate matrix lower results would be acceptable.