Item Infomation
Title: | Quantification of anthropogenic and geogenic Ce in sewage sludge based on Ce oxidation state and rare earth element patterns |
Authors: | Gogos, A. |
Participants: | Wielinski, J. Voegelin, A. Kammer, F.V.D. Kaegi, R. |
Issue Date: | 2020 |
Series/Report no.: | Water Research X, Volume 9, 1 December 2020, 100059 |
Abstract: | Based on the assumption that the industrially used Ce is free of (most) other REE, we estimated the fraction of anthropogenic Ce in the sludges based on individual Ce/REE ratios. For the individual sludges the anthropogenic contributions were very variable (10–100%) but consistent fractions were obtained for individual sludges when calculated based on Ce/Dy (dysprosium), Ce/Er (erbium) and Ce/Eu (europium) ratios. Electron microscopy analysis of sludges dominated by anthropogenic Ce revealed that the Ce was mostly contained in nanoscale particles devoid of elements characteristic of Ce-bearing minerals. Thus, anthropogenic Ce contents derived from REE patterns may be used to validate current mass flow models for engineered CeO2 nanoparticles. |
URI: | http://tailieuso.tlu.edu.vn/handle/DHTL/10471 |
Source: | https://www.sciencedirect.com/science/article/pii/S2589914720300190 |
ISSN: | 2589-9147 |
Appears in Collections: | Tài liệu mở |
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