Hi Joel,
How much edge shift are you seeing between your foil and the solution?
Cu+2 is about 4.5 eV up from Cu metal...you seeing about that much?
Cu+2 can photoreduce...I know Cu+(aq) isn't stable, but maybe some
complex is forming?
Just a thought...CN=2 and I think linear Cu+
-R.
On 2023-04-21 6:58 p.m., Joel Brugger wrote:
Capillary is silica glass :-)
On 22 Apr 2023, at 11:57 am, Anatoly Frenkel
<anatoly.fren...@stonybrook.edu> wrote:
Capillary made or what?
Anatoly
On Apr 21, 2023, at 9:52 PM, Joel Brugger <joel.brug...@monash.edu>
wrote:
Fluo, 0.5 wt% Cu.
On 22 Apr 2023, at 11:41 am, Anatoly Frenkel
<anatoly.fren...@stonybrook.edu> wrote:
Fluorescence or transmission?
What is the Cu concentration? Could be self absorption.
Anatoly
On Apr 21, 2023, at 9:31 PM, Joel Brugger
<joel.brug...@monash.edu> wrote:
Dear list,
We are trying to fit EXAFS from data collected on solutions within
a capillary. The capillary has OD 1mm, ID 0.8mm, and was placed
horizontally. The beam is 1x2 mm (VxH).
Fitting the copper reference foil, we get the expected SO2 value
of ~0.7.
However, the solution containing the Cu(II) aqua ion gives a
coordination of 2, instead of the expected 5-6. So our SO2 for
this solution is apparently ~0.25.
I couldn’t find a discussion of the effect of geometry (in our
case cylindrical rather than planar) on SO2. Is it possible that
the low SO2 is a result of the odd geometry?
Confused as ever,
JOEL
*Joël Brugger*
Professor of Synchrotron Geosciences
*Monash University*
School of Earth, Atmosphere and Environment
Room 257A, Level 2, 9 Rainforest Walk <x-apple-data-detectors://2>
Clayton, Victoria 3800 <x-apple-data-detectors://2>
Australia <x-apple-data-detectors://2>
T: +61 3 9905 4898 <tel:+61%203%209902%209095>
E: joel.brug...@monash.edu <mailto:andrew.mackint...@monash.edu>
Twitter: @JoelBrugger
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