20.500.12556/DiRROS-31427 Geochemical properties of stream sediments and suspended particulate matter and determination of geochemical background values for the Alpine River Mura Suspended particulate matter (SPM) and stream sediments (STS) from 66 locations (main channel and tributaries) were geochemically investigated in the Alpine transboundary river Mura to provide an integrated view of the long-term accumulation of pollutants and the present-day pollution status of the catchment, including the distribution of YREE (yttrium and rare earth elements) which are regarded as emerging pollutants due to use of modern technologies. Cluster analysis identified 4 geochemical associations in SPM for the low water regime: (1) Cu, Cd, Bi, Pb, Mn, Ni and Cr; (2) Ca, Sr; (3) U, Fe, Co, Rb, YREE, V, Ti, Mg and (4) Ba, Ga, Al and Li. Six groups were identified for STS samples: (1) YREE, U, Mn, Fe, Ti; (2) As, V, Ga, Al; (3) Ca, Sr, Na; (4) Cu, Ni, Co, Cr, Mg; (5) Ag, Bi, Pb, Cd, Zr and (6) Ba, Zn, Rb and Li. The study concluded that the identified geochemical groups reflect the geological composition of the catchment area as well as anthropogenic impacts, notably mining, steel industry, and urbanisation. The spatial distribution of YREE was identified as an indicator of sediment provenance. Eu and Ce anomalies were observed in SPM, reflecting the local geology, while the Gd anomaly may indicate anthropogenic inputs. The study concludes that STS primarily reflect the geogenic distribution of elements, while SPM is a more sensitive indicators of anthropogenic activities for the Alpine fluvial environment. Study also provides upper background and threshold values for Mura River catchment that may serve as reference values in future environmental studies. stream sediments suspended particulate matter cluster analysis contaminant monitoring true false true Angleški jezik Ni določen Neznano 2026-07-31 14:25:43 2026-07-31 14:25:43 2026-08-01 03:50:45 0000-00-00 00:00:00 2026 0 0 24 str. vol. 48, [article no.] 470 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2026-07-18 55 0269-4042 10.1007/s10653-026-03331-4 285647363 s10653-026-03331-4-1.pdf s10653-026-03331-4-1.pdf 1 AAA652B7384D2525F681123272DBF42C 56c8a1646db0901538fb730add23889790a7d8dbccf73d00d4f5992b25a19c83 a8d3c3e4-8cdb-11f1-a81a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48656 10653_2026_3331_MOESM1_ESM.docx 10653_2026_3331_MOESM1_ESM.docx 1 49603720C2158EE9870FA71780283E6B 411a497ebb1e90d2d2ab06a38b411f8ab42c027607ba61d759de3c1ef4c7d64d 78b08780-8cdc-11f1-a81a-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=48665 Geološki zavod Slovenije 0 0 0