Phosphorus L2,3 – edge XANES: Overview of reference compounds

Autor: Kruse, J.; P. Leinweber; K.-U. Eckhardt; F. Godlinski; Y. Hu; L. Zuin
In:

Journal of Synchrotron Radiation

Auflage: 16
Ergaenzung: Abstract 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 were done at the K-edge. The small number of distinctive features at 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 L2,3-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 were not 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.
ISBN: 0909-0495
Seite: 247 - 259
Jahr: 2009

Einordung:
Institut: Professur Bodenkunde

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