Physical Sciences and Mathematics Commons^™

Accumulation And Effects Of Dissolved And Nanoparticle Silver And Copper In Two Marine Seaweed Species, Samreen Siddiqui, Gretchen K. Bielmyer-Fraser

Georgia Journal of Science

This study investigated the accumulation and effects of metal nanoparticles in two seaweed species, Ulva lactuca and Agardhiella subulata. Both seaweeds were exposed to silver nitrate (AgNO₃), silver nanoparticles, and copper oxide (CuO) nanoparticles for 48 h. Metal accumulation occurred in both seaweed species in a concentration-dependent manner after 48 h exposure to each form of metal. In several cases, seaweeds exposed to AgNO₃ (the dissolved form) accumulated comparatively higher tissue Ag concentration than seaweed exposed to Ag nanoparticles; and A. subulata had higher tissue Ag concentrations than U. lactuca after exposure to AgNO₃ for …