New article by Mélanie Auffan, Wei, L., Brousset, L., Scifo, L., Pariat, A., Sanles, M., Chaurand, P., Angeletti, B., Thiéry, A., Masion, A., Rose, A., on environmental exposure of a simulated pond ecosystem to a CuO nanoparticle-based wood stain throughout its life cycle in Environmental Science Nano
Abstract:
Indoor aquatic mesocosms were used to assess the behavior of fragmented products of a wood stain containing CuO nanoparticles in a simulated pond ecosystem for 1 month. By-products of degradation containing Cu are likely to be released during the use and end-of-life of this wood stain. Cu (bio)transfor- mation and (bio)distribution within different environmental compartments (e.g. water, sediments, and ben- thic grazers) were carefully analyzed. Because of the presence of the stain matrix, CuO nanoparticles contained in fragmented products were less bio-physical–chemically transformed (dissolution, complexa- tion) with respect to pristine nanoparticles. After 28 days, only 1% of the Cu injected following fragmented product exposure remained in the water column (0.08 μg L−1), and 10% for the pristine CuO nanoparticles (2.67 μg L−1). Among these ∼10%, ∼51% were dissolved Cu species (1.35 μg L−1). These results are discussed with respect to the ecological compartments in which they accumulated, and to the doses to which aquatic organisms with distinct life traits were exposed.
http://dx.doi.org/10.1039/c8en00712h
