Mike,
Thanks, we will try diluted samples to make sure that this is not an issue due
to concentration.
Luis,
Thanks for sharing those papers. We have plenty of OC in these systems, but Pb
or other trace elements concentrations are very small (below 10 mg/kg).
Best regards,
Ganga
Yes I was wondering about this as well. Technically P(III) exists, and maybe
one could find it in an AMBR? But I don't think anyone has a clue about what
the K-edge XANES spectrum looks like.
Has anyone ever collected a phosphite spectrum? That would be pretty cool. I
would totally do it but
Stefan,
Thanks for sharing your thoughts. Please share if you do have spectra for any
other P (i.e., not +5).
Best regards,
Ganga
Ganga M. Hettiarachchi, Ph.D.
Professor of Soil and Environmental Chemistry
Department of Agronomy
2107 Throckmorton Plant Sciences Center
My2Cents,
strange features in spectra can be also induced by mixtures of different
species (especially from different oxidation states, especially at low energies)
best regards
Stefan Mangold
Karlsruhe Institute of Technology (KIT)
Am 16.10.2020 um 07:26 schrieb Ganga Hettiarachchi
I recommend diluting this sample by a lot (20x maybe, or more) and collecting
another spectrum. I've had instances of strange features in P spectra that
ended up being weird self-absorption type artifacts.
I will dig through the spectra I have from similar samples, this one reminds me
of a
Hello Ganga,
That is a very interesting spectrum. Given what you said about the system,
the lower energy feature at ~ 2146 eV should be Fe(III)-bonded phosphate
and the feature at ~2149 eV should be Al(III)-bonded phosphate. Both
produce pre-white line absorption peaks, but the Al-bonded
All,
Can anyone provide some insight into the pre-edge "features" in this P XANES
spectrum?
This is the P XANES spectrum we got for a recovered P-product (rich in Fe and
Al) from wastewater using the AnMBR technology. During the coagulation process,
our collaborators (environmental engineers)
