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SUMMARY:Chemical Speciation Imaging using Fast X-ray Fluorescence Microsco
 py: Update on capabilities and future directions
DTSTART;VALUE=DATE-TIME:20141121T033500Z
DTEND;VALUE=DATE-TIME:20141121T035500Z
DTSTAMP;VALUE=DATE-TIME:20260809T081217Z
UID:indico-contribution-724@events01.synchrotron.org.au
DESCRIPTION:Speakers: David Paterson (Australian Synchrotron)\nX-ray fluor
 escence microscopy (XFM) can be used for elemental and chemical microanaly
 sis across many length scales and is a powerful tool for quantitatively ma
 pping trace elements within whole biological specimens [1].  Advances in X
 -ray fluorescence detection schemes [2\, 3] now enable acquisition at mega
 -pixel per hour rates which in turn allows collection of 3D information in
  realistic times.  Chemical speciation imaging (CSI) results in an image s
 tack with the third dimension containing a XANES spectra in each pixel [4]
 .  Fitting of spectra with incident X‑ray beam energy tracking has been 
 developed in GeoPIXE software using the Dynamic Analysis method [5\, 6].  
 CSI has been demonstrated with moderate definition (10\,000s of pixels/ima
 ge) across a diverse range of applications [7\, 8].  Recent studies have i
 mproved the efficiency and sensitivity of CSI to environmentally relevant 
 concentrations.  \n\n[1] D. Paterson et al.\, AIP Conference Proceedings 1
 365\, 219 (2011).\n[2] D. P. Siddons et al.\, AIP Conference Proceedings 7
 05\, 953 (2004).\n[3] R. Kirkham et al.\, AIP Conference Proceedings 1234\
 , 240 (2010).\n[4] B. E. Etschmann et al.\, American Mineralogist 95\, 884
  (2010).\n[5] C. G. Ryan\, Int. J. of Imaging Systems and Tech. 11\, 219 (
 2000).\n[6] C. G. Ryan et al.\, J. of Physics: Conf. Series 499\, 012002 (
 2014).\n[7] P. M. Kopittke\, et al.\, New Phytologist 201\, 1251 (2014).\n
 [8] B. E. Etschmann et al.\, Environmental Chemistry\, 11\, 341 (2014).\n\
 nhttps://events01.synchrotron.org.au/event/3/contributions/724/
LOCATION: NCSS Seminar Room
URL:https://events01.synchrotron.org.au/event/3/contributions/724/
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