1. p) XPS spectra of samples Tzk1-542-A, Tzk2-516-A and Tzk2-516-239 NA are shown in Figure 2, while the rest are shown in Figure A;XPS features 238 The U(4f) and Fe
2. ) spectra of samples Tzk1-542-A, Tzk1-542-NA, Tzk2-516-A, Tzk2-516-NA 242 and Tzk2-516-B can be fitted with two peaks located at;Fe ; Ilton;eV, 243 corresponding to reduced U (U(IV) and/or U(V), labeled as U(IV)-U(V)) and unreduced U(VI), 244 respectively,2007
3. For the same claystone at a similar reaction pH, the U(IV)-U(V) ratios are higher in the presence 249 of uranyl acetate than that in the presence of uranyl nitrate, confirming that NO 3 -ion associated References;H Ahmed;EGU General Assembly Conference Abstracts,2012
4. The product of microbial uranium reduction includes multiple species with U(IV)-phosphate coordination;D S Alessi;Geochim. Cosmochim. Acta,2014