Determination of CeO2 Nanoparticle Plant Uptake using Single Particle ICP-MS

Cerium dioxide (CeO2) nanoparticles have found wide use in industrial and commercial products, such as coating materials, fuel additives, and nanomedicine, to name a few. As such, it is expected that CeO2 nanoparticles (NPs) will find their way into the environment and may be transported via aqueous systems where they may end up in drinking water and/or plants, both of which increase the possibility of consumption by humans. It has been shown that drinking water treatment removes CeO2 NPs1, so the likelihood of ingestion by humans is reduced. However, several studies have demonstrated plant uptake of CeO2 NPs, although the mechanism is unknown2-4. It has been demonstrated that single particle ICP-MS (SP-ICP-MS) can effectively detect nanoparticles in plant tissue4 and other biological systems5. The benefits of SP-ICP-MS for these types of studies include the ability to rapidly count and size NPs, even at low concentrations, as well as determine the dissolved metal content. SP-ICP-MS has been shown to effectively measure these NPs in several different matrices. Determination of CeO2 Nanoparticle Plant Uptake using Single Particle ICP-MS A P P L I C A T I O N N O T E