Investigation of aquatic toxicity of cerium and lithium technology critical elements

This work aimed to investigate aquatic acute and chronic toxicity of two technology critical elements, namely Cerium and Lihium, to Daphnia magna and Artemia salina. Results showed that both Lithium and Cerium exhibited severe toxicity to Daphnia magna at lower concetrations than Artemia salina prior and post illumination excitation. Toxicity was slightly decreased under post illumination conditions. Artemia salina chronic test results revealed a non-effect of both humic acid and illumination. Similar to acute test results toxicity decreased with the increasing photon flow while presence of humic acid did not show any significant effect on the toxicity of both elements to Artemia salina.