@misc{klein_technologycritical_elements_2022, author={Klein, O., Zimmermann, T., Hildebrandt, L., Pröfrock, D.}, title={Technology-critical elements in Rhine sediments - A case study on occurrence and spatial distribution}, year={2022}, howpublished = {journal article}, doi = {https://doi.org/10.1016/j.scitotenv.2022.158464}, abstract = {Obtained mass fractions in conjunction with corresponding geoaccumulation indices (Igeo) provide first indications of a possible enrichment along the Rhine for the TCEs of interest (Ga, Ge, Nb, In, Te, rare earth elements, and Ta). Especially the mass fractions of Zn, Ge, In, La, Sm, and Gd exhibit significant anthropogenic inputs. For stations characterized by high Ge and In mass fractions, element fingerprints imply possible atmospheric deposition stemming from e.g. combustion processes. Distinct anomalies of La and Sm most likely originate from discharges located at the city of Worms into the Upper Rhine. Statistical analysis of all analyzed 55 elemental mass fractions revealed similar behavior of TCEs compared to classical heavy metals. Diffuse as well as point sources of TCEs are likely. As a result, this study provides further insight into the role of TCEs as potential emerging contaminants in the environment.}, note = {Online available at: \url{https://doi.org/10.1016/j.scitotenv.2022.158464} (DOI). Klein, O.; Zimmermann, T.; Hildebrandt, L.; Pröfrock, D.: Technology-critical elements in Rhine sediments - A case study on occurrence and spatial distribution. Science of the Total Environment. 2022. vol. 852, 158464. DOI: 10.1016/j.scitotenv.2022.158464}}