Trace and rare earth elements determination in milk whey from the Veneto region, Italy

Highlights o Multi-elemental determination is performed on cow and goat milk whey samples. o Fe, Cu, Zn, Se and Sr are present in both cow and goat milk whey samples. o Levels of toxic metals such as Pb, Cd, As, and Ni include no significant content. o Cow milk whey has an important content of REEs than goat milk whey samples. o Trace elements and REEs provide useful information about geographical origin.