Isotopic identification of natural vs. anthropogenic lead sources in marine sediments from the inner Ría de Vigo (NW Spain)

► Pb stable isotope ratios were applied to study Pb sources in coastal sediments. ► Pb isotopic ratios were determined for pre-pollution and for industrial samples. ► A binary mixing model was applied in polluted samples to study anthropogenic inputs. ► A three-source model was applied to apportion anthropogenic sources. ► Pb input history was established for the last one/two centuries in the study area.