Hello Dean,
Thanks for this interpretation; it makes sense. I was (am still) quite surprised by the intense of Al(III) pre-edge feature as we did not detect anything else in our XRD work, except some Fe oxides (the product is X-ray amorphous most likely).
Hello Mike,
Thanks. We diluted this sample already to bring P concentration below 5000 mg/kg. We can potentially try further diluting, but when we go below that, sometimes we have a hard time getting a reasonable P spectrum in environmental samples.
Best regards,
Ganga
--------------------
Ganga M. Hettiarachchi, Ph.D.
Professor of Soil and Environmental Chemistry
Department of Agronomy
2107 Throckmorton Plant Sciences Center
1712 Claflin Road
Kansas State University
Manhattan, KS 66506 USA
785-532-7209 (office)
785-532-6094 (FAX)
http://www.agronomy.k-state.edu/research/soil-and-environment/soil-environme...
http://www.agronomy.k-state.edu/people/faculty/hettiarachchi-ganga/index.htm...
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Today's Topics:
1. Re: P K-edge XANES spectrum question (Dean Hesterberg)
2. Re: P K-edge XANES spectrum question (Mike Massey)
----------------------------------------------------------------------
Message: 1
Date: Fri, 16 Oct 2020 05:21:58 -0400
From: Dean Hesterberg
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) used stock solutions of aluminum chlorohydrate (ACH) and FeCl3.
Thanks very much.
Best regards,
Ganga
--------------------
Ganga M. Hettiarachchi, Ph.D.
Professor of Soil and Environmental Chemistry
Department of Agronomy
2107 Throckmorton Plant Sciences Center
1712 Claflin Road
Kansas State University
Manhattan, KS 66506 USA
785-532-7209 (office)
785-532-6094 (FAX)
http://www.agronomy.k-state.edu/research/soil-and-environment/soil-env ironment-chem/
http://www.agronomy.k-state.edu/people/faculty/hettiarachchi-ganga/ind ex.html
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-- DEAN HESTERBERG William Neal Reynolds Distinguished Professor of Soil Chemistry Dept. of Crop and Soil Sciences NC State University email: dean_hesterberg@ncsu.edu