Activities per year
Abstract
The use of fluorescence full spectral micro-X-ray absorption near-edge structure
(μXANES) mapping is becoming more widespread in the hard energy regime.
This experimental method using the Ca K-edge combined with micro-X-ray
diffraction (μXRD) mapping of the same sample has been enabled on beamline
I18 at Diamond Light Source. This combined approach has been used to probe
both long- and short-range order in calcium carbonate granules produced by the
earthworm Lumbricus terrestris. In granules produced by earthworms cultured
in a control artificial soil, calcite and vaterite are observed in the granules.
However, granules produced by earthworms cultivated in the same artificial soil
amended with 500 p.p.m. Mg also contain an aragonite. The two techniques,
μXRD and μXANES, probe different sample volumes but there is good
agreement in the phase maps produced.
(μXANES) mapping is becoming more widespread in the hard energy regime.
This experimental method using the Ca K-edge combined with micro-X-ray
diffraction (μXRD) mapping of the same sample has been enabled on beamline
I18 at Diamond Light Source. This combined approach has been used to probe
both long- and short-range order in calcium carbonate granules produced by the
earthworm Lumbricus terrestris. In granules produced by earthworms cultured
in a control artificial soil, calcite and vaterite are observed in the granules.
However, granules produced by earthworms cultivated in the same artificial soil
amended with 500 p.p.m. Mg also contain an aragonite. The two techniques,
μXRD and μXANES, probe different sample volumes but there is good
agreement in the phase maps produced.
Original language | English |
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Pages (from-to) | 235-241 |
Number of pages | 7 |
Journal | Journal of Synchrotron Radiation |
Volume | 21 |
Issue number | 1 |
Early online date | 20 Dec 2013 |
DOIs | |
Publication status | Published - Jan 2014 |
Bibliographical note
This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.Keywords
- full spectral XANES imaging
- microfocus diffraction mapping
- earthworm granules
Activities
- 2 Public lecture
-
Earthworms and their balls of calcite
Mark Edward Hodson (Invited speaker)
23 Jan 2019Activity: Talk or presentation › Public lecture
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Earthworms and their balls of calcite
Mark Edward Hodson (Speaker)
28 May 2015Activity: Talk or presentation › Public lecture