Unraveling pH-Dependent Changes in Adsorption Structure of Uranyl on Alumina (012).

Mitigating uranium transport in groundwater is imperative for ensuring access to clean water across the globe. Here, resonant anomalous X-ray reflectivity is used to investigate the adsorption of uranyl on alumina (012) in acidic aqueous solutions, representing typical U concentrations of contaminated water near mining sites. The analyses reveal that U adsorbs at two distinct heights of 2.

Y(III) Sorption at the Orthoclase (001) Surface Measured by X-ray Reflectivity.

Interactions of heavy metals with charged mineral surfaces control their mobility in the environment. Here, we investigate the adsorption of Y(III) onto the orthoclase (001) basal plane, the former as a representative of rare earth elements and an analogue of trivalent actinides and the latter as a representative of naturally abundant K-feldspar minerals. We apply in situ high-resolution X-ray reflectivity to determine the sorption capacity and molecular distribution of adsorbed Y species as a function of the Y concentration, [Y], at pH 7 and 5.

Primary care provider interventions for the delayed disclosure of adolescent sexual assault.

Acute sexual assault is a serious and underreported crime with the potential for causing grave physical and emotional harm to its victim. As a result of developmental and psychological factors, the adolescent victim may delay the disclosure of such an assault and therefore experience detrimental, acute, and long-term effects. By understanding the reasons for delayed disclosure and integrating this with currently established guidelines for acutely assaulted patients, primary care providers can better tailor the care they provide when faced with the delayed disclosure of adolescent sexual assault.