Diamond Publications - Search Results

Search Again...

These results include publications that have not yet been reviewed and processed by Diamond Light Source. To view only processed publications click here.

You can use the folder icon under Actions to collate papers as required. You can then click on View Folder in the left-hand navigation to review and/or download your folder.

One item found (0 items not approved).

Instruments / Technical Area	Publication Details	Published	Actions
I18-Microfocus Spectroscopy	Origin and fate of Vanadium in the Hazeltine Creek Catchment following the 2014 Mount Polley mine tailings spill, British Columbia, Canada Karen A. Hudson-Edwards , Patrick Byrne , Graham Bird , Paul A. Brewer , Ian T. Burke , Heather E. Jamieson , Mark G. Macklin , Richard D. Williams Environmental Science & Technology DOI: 10.1021/acs.est.8b06391 Diamond Proposal Number(s): [15046] Open Access Show Abstract ▼ Abstract: Results are presented from the analysis of aqueous and solid-phase V speciation within samples collected from the Hazeltine Creek catchment affected by the August 2014 Mount Polley mine tailings dam failure, Canada. Electron microprobe and XANES analysis found that V is present as V3+ substituted into magnetite, and V3+ and V4+ substituted into titanite, both of which occur in the spilled Mount Polley tailings. Secondary Fe oxyhydroxides forming in inflow waters and on creek beds have V K-edge XANES spectra exhibiting E½ positions and pre-edge features consistent with the presence of V5+ species, suggesting sorption of this species on these secondary phases. PHREEQC modelling suggests that the stream waters mostly contain V5+, and the inflow and pore waters contain a mixture of V3+ and V5+. These data, and stream, inflow and pore water chemical data, suggest that dissolution of V(III)-bearing magnetite, V(III,IV)-bearing titanite, V(V)-bearing Fe(-Al-Si-Mn) oxhydroxides, V-bearing Al(OH)3 and/or -clay minerals may have occurred. In the circumneutral pH environment of Hazeltine Creek elevated V concentrations are likely naturally attenuated by formation of V(V)-bearing secondary Fe oxyhydroxide, Al(OH)3 or clay mineral colloids, suggesting that the V is not bioavailable. A conceptual model is presented describing the origin and fate of V in Hazeltine Creek that is applicable to other river systems.	Mar 2019

Instruments / Technical Area

Publication Details

Published

Actions

I18-Microfocus Spectroscopy

Origin and fate of Vanadium in the Hazeltine Creek Catchment following the 2014 Mount Polley mine tailings spill, British Columbia, Canada

Karen A. Hudson-Edwards , Patrick Byrne , Graham Bird , Paul A. Brewer , Ian T. Burke , Heather E. Jamieson , Mark G. Macklin , Richard D. Williams

Environmental Science & Technology

DOI: 10.1021/acs.est.8b06391

Diamond Proposal Number(s): [15046]