title: Rare Earth Elements in Shells of Black Sea Molluscs: Anomalies and Biogeochemical Implications
abstract: Rare earth elements (REE) are a class of increasingly used high-tech product components and new emerging environmental pollutants, which are accumulated, in particular, in marine biota. In this study, REE contents were estimated in shells of several molluscs common in the Black Sea. The summed REE contents in mollusc shells decreased in the following order of species: Magallana gigas = Anadara kagoshimensis &gt; Flexopecten glaber ponticus ≥ Rapana venosa &gt; Mytilus galloprovincialis, ranging 
journal: Journal of Marine Science and Engineering