Effect of Exposure Concentration and Growth Conditions on the Association of Cerium Oxide Nanoparticles with Green Algae
Cerium oxides nanoparticles (CeO2 NPs) have gained attention due to their unique properties and applications. They are used in various industries, from catalysts to fuel cells. But as these nanoparticles find their way into our waterways, it is essential to understand their potential impact on aquatic life.
The presented study conducted by researchers at the Technical University of Denmark and TOFWERK delves into this specific question, focusing on the interaction between CeO2 NPs and green algae (Raphidocelis subcapitata). In this study, algae was exposed to different concentrations of CeO2 NPs, including levels relevant to natural water environments. Subsequently, using the technique of single-particle ICP-MS, the interaction between the NPs and the algae could be tracked and investigated. Here the high sensitivity of the icpTOF S2 was of particular advantage and the full simultaneous multi-element detection capability allowed the capture of a full and comprehensive picture of the association NPs-cell. While the research found evidence of CeO2 NPs association with algae, the data suggests that these nanoparticles are unlikely to be taken up or adsorbed to algal cells after 24 hours of exposure.
The study serves as a reminder of the importance of ongoing research into the environmental impact of emerging technologies, ensuring a sustainable and balanced coexistence between nature and innovation.