Hi Xia - please see my comment below
Xia Bing
Dear members of the mailing list: This year we have applied the synchrotron radiation and get the chance to
Beijing Synchrotron Radiation Facility at beamline 1W1B-XAFS. It is the first time to use this equipment to measure our samples. We communicate with the beamline staff for some guideline and help, but they also do not have much experience on soil samples. Would you like give us some suggestions? If you could, can you supply me some resources like sample preparation or others?
Now I try to use synchrotron radiation to elucidate some phenomenons of heavy
metals in mining area soil. In my soil sample, the Zn is about 498ppm and the Cu is about 562ppm, the first step I focus on Zn but the copper concentration is higher than Cu. Will copper interfere zinc If I use XAFS to measure the Zn?
I plan to use fluorescence detection. The Fe in the sample is at high
concentrations (85g/kg), from some literature that might be an issue. Would you like to give me some suggestions in the sample preparation and measurement?
*********************************************************************** Just a comment: Be careful with these high concentrations while using fluorescence. Be sure to dilute your samples (e.g. with boron nitride) so you won't have a self absorption problem. Alternatively, you might use transmission mode instead of fluorescence. If you are a beginner (like me), a very good review for practical as well as theoretical issues is "Analysis of soils and minerals using X ray absorption spectroscopy" (Kelly et al. 2008). Good luck, Hana *********************************************************************
Thank you very much.
Best Regards
Xia Bing-- Department of Environmental Engineering,
Room D-614, 6/F,Geography and Environmental Sciences Building,Sun Yat-sen University,Guangzhou, Guangdong, 510275Cellphone: +86 150 1301 6565Personal Website:http://sweetblues.cn
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