TY - JOUR ID - 715 TI - Environmental Studies of Iron in Sediments by Means of X-ray Absorption Spectroscopy JO - International Journal of Environmental Research JA - IJER LA - en SN - 1735-6865 AU - Banas, A. AU - Banas, K. AU - Yang, P. AU - Moser, H.O. AU - Breese, M.B.H. AU - Kubica, B. AU - Kwiatek, W.M. AD - Singapore Synchrotron Light Source (SSLS), National University of Singapore (NUS), 5 Research Link, Singapore AD - ISS / ANKA Light Source, Forschungszentrum Karlsruhe, Germany, Hermann-von-Helmholtz- Platz 176344 Eggenstein-Leopoldshafen, Germany AD - Singapore Synchrotron Light Source (SSLS), National University of Singapore (NUS), 5 Research Link, Singapore, Physics Department, NUS, 2 Science Drive 3, Singapore AD - Institute of Nuclear Physics PAN, ul Radzikowskiego 152, 31-342 Krakow, Poland Y1 - 2014 PY - 2014 VL - 8 IS - 2 SP - 263 EP - 272 KW - Sediments KW - XAFS KW - Multivariate analysis DO - 10.22059/ijer.2014.715 N2 - X-ray Absorption Fine Structure (XAFS) spectroscopy was used to identify directly the metal speciation and local bonding environment of Fe in sediments originated from Dobczyce reservoir (Poland); special attention was paid to analysis of samples collected from points situated at different distances from the land. The combination of traditional approach to data analysis as well as usage of multivariate techniques provided reliable information on the local Fe structure. The obtained average oxidation state for Fe species inall samples was found to be at about +3. The number, nature, and proportion of Fe species in sedimentssamples were calculated by a coupled Principal Component Analysis (PCA) and Least-Squares Fitting (LSF)procedure. Results indicate for a high similarity among analyzed data collected for various points fromDobczyce reservoir. Among different forms of amorphous oxyhydroxides and various iron oxides commonlypresent in lake sediments, hematite (Fe2O3) and goethite (α-FeOOH) were found to be the dominant crystalline structures in analyzed samples. Based on that finding it can be concluded that Fe is principally bound to oxygen in sediment samples, therefore its (re )mobilization to the water may be neglected. UR - https://ijer.ut.ac.ir/article_715.html L1 - https://ijer.ut.ac.ir/article_715_1ce11ec88fa57c50d6cde2e96fe1e014.pdf ER -