11The concentrations of rare earth elements (REE) were determined by ICP-MS in dominant seaweed 12 species, collected from three locations of the northwestern Mediterranean Sea. This is the first study 13 to define levels and patterns of REE in macro algae from these coastal areas.14 Rare elements are becoming emerging inorganic contaminants in marine ecosystems, due to their 15 worldwide increasing applications in industry, technology, medicine and agriculture.
16Significant inter-site and interspecies differences were registered, with higher levels of REE in 17 brown and green macro algae than in red seaweeds. Levels of light REE were also observed to be 18 greater compared to heavy REE in all samples.
19One of the investigated locations (Bergeggi, SV) had higher REE and ΣREE concentrations, 20 probably due to its proximity to an important commercial and touristic harbor, while the other two 21 sites were less affected by anthropogenic contaminations, and showed comparable REE patterns 22 and lower concentrations.
24Capsule: rare earth elements in seaweeds 25 26