Phosphorus L 2,3 -edge XANES: overview of reference compounds
Synchrotron-based X-ray absorption near-edge structure (XANES) spectroscopy is becoming an increasingly used tool for the element speciation in complex samples. For phosphorus (P) almost all XANES measurements have been carried out at the K -edge. The small number of distinctive features at the P K...
Gespeichert in:
Veröffentlicht in: | Journal of synchrotron radiation 2009-03, Vol.16 (2), p.247-259 |
---|---|
Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Synchrotron-based X-ray absorption near-edge structure (XANES) spectroscopy is becoming an increasingly used tool for the element speciation in complex samples. For phosphorus (P) almost all XANES measurements have been carried out at the
K
-edge. The small number of distinctive features at the P
K
-edge makes in some cases the identification of different P forms difficult or impossible. As indicated by a few previous studies, the P
L
2,3
-edge spectra were richer in spectral features than those of the P
K
-edge. However, experimentally consistent spectra of a wide range of reference compounds have not been published so far. In this study a library of spectral features is presented for a number of mineral P, organic P and P-bearing minerals for fingerprinting identification. Furthermore, the effect of radiation damage is shown for three compounds and measures are proposed to reduce it. The spectra library provided lays a basis for the identification of individual P forms in samples of unknown composition for a variety of scientific areas. |
---|---|
ISSN: | 0909-0495 |
DOI: | 10.1107/S0909049509000211 |