PMC

(A) Sea salt contribution to Uranium deposition. (B) Excess U. (C) Excess U accounts for % of total U.

(A) The Uranium production of Australian, South Africa, South America from 1970 to 2010 (data from minerals UK at http://www.bgs.ac.uk/mineralsuk/statistics/wms.cfc?method=searchWMS). (B) The correlation between the annual U concentration and the annual production of Australia (T-test).

The δ²³⁸ values for extracellular and intracellular uranium. Red triangles correspond to uranium in the exposure solutions ([U] = 10 μM), whereas blue squares are for uranium incorporated by SH-SY5Y cells. The δ²³⁸ values are calculated relative to the natural uranium stock solution. Error bars correspond to the expanded uncertainty (k = 2). Plain red and blue lines correspond to the mean of δ²³⁸ values obtained for extracellular and intracellular uranium, respectively, in seven independent experiments. Dashed lines represent the reproducibility of the δ²³⁸ values (2σ, n = 7). Values for extracellular and intracellular uranium were statistically different according to a t test (***P < 0.001).

a) A comparison of U L_III‐edge XANES spectra for In−N _x −C−R after uranium adsorption and electrocatalysis, along with data for various uranium standards. b) EXAFS fitting curve for In−N _x −C−R after adsorption of uranium. c) A photograph of the electrochemically generated product Na₂O(UO₃·H₂O) _x . d) EXAFS fitting curve for In−N _x −C−R after electrocatalysis. e) A comparison of U 4f XPS spectra for In−N _x −C−R after uranium adsorption and electrocatalysis. f) PXRD pattern of the electrochemically generated Na₂O(UO₃·H₂O) _x . The reference data for UO₂, UO₃, and UO₂(NO₃)₂·6H₂O in (a) were taken from our previous work.^{[ ]}