[Ifeffit] XANES spectra of Zn-organic references

Latta, Drew E drew-latta at uiowa.edu
Fri May 18 10:14:51 CDT 2018

Dear Emmanuelle,

I worked with plants and metals a little in my post-doc as a collaboration. We found that ZnO-exposed wheat was binding Zn as a phosphate complex. Probably a Zn-phytate. But the coordination is close enough to the inorganic mineral hopeite for XANES fingerprinting. Data from the paper is attached here. The reference is a standard Zn foil reference.


From my recollection, phytate-metal complexes are fairly ubiquitous in plants, but particularly so in the cereal grains. It is probably worth finding a Zn-phytate reference, but we never had the time and money to synthesize one.

Best regards,

Drew Latta

From: Ifeffit [mailto:ifeffit-bounces at millenia.cars.aps.anl.gov] On Behalf Of emmanuelle Montarges-Pelletier
Sent: Friday, May 18, 2018 8:46 AM
To: ifeffit at millenia.cars.aps.anl.gov
Subject: [Ifeffit] XANES spectra of Zn-organic references

Dear all
We have measured Zn XANES spectra within biological samples (seeds), in ambient conditions (room temperature). In order to interprete the spectra, we are searching for Zn-organic reference spectra (XANES only).
Indeed, we would be interested by Zn organic compounds with sulfur and/or nitrogen and/or oxygen in the first shell of coordination. On the joined graph are plotted the experimental spectra (microspectra on seeds), compared to Zn-citrate and Zn-cysteine. Energy calibration was checked for all spectra.
thanks in advance for your answers
best regards

Chargée de Recherche CNRS

LIEC Laboratoire Interdisciplinaire des Environnements Continentaux
UMR 7360 CNRS Université de Lorraine
15 avenue du Charmois
F-54500 Vandœuvre-lés-Nancy - France
tel 33 (0)03 72 74 47 30
mob 33(0)6 31 33 10 30
****attention changement de numéro de téléphone
tel 33 (0)3 72 74 47 30

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/attachments/20180518/4868316b/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ZnPO4.prj
Type: application/octet-stream
Size: 19366 bytes
Desc: ZnPO4.prj
URL: <http://millenia.cars.aps.anl.gov/pipermail/ifeffit/attachments/20180518/4868316b/attachment-0001.obj>

More information about the Ifeffit mailing list