Technology-critical elements in fishes from two of the Laurentian Great Lakes

U.S. and Canada have long-term monitoring programs for metals which provide important information about the status of contaminants in the Great Lakes. However, some technology-critical elements (Ce, Gd, Hf, Ir, Os, Re, Ru, Ta, W, Y) that are increasingly extracted and used in electronics have not been included in such programs to understand their presence in aquatic ecosystems. We studied the concentrations of these elements in muscle of six …