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3D Chemical Characterization of Micron-Sized Coal Fly Ash Particles

Published online by Cambridge University Press:  25 February 2011

Richard W. Linton ,
Scott R. Bryan ,
X. B. Cox  and
Dieter P. Griffis
Richard W. Linton
Affiliation:
Department of Chemistry, University of North Carolina, Chapel Hill, NC 27514
Scott R. Bryan
Affiliation:
Department of Chemistry, University of North Carolina, Chapel Hill, NC 27514
X. B. Cox
Affiliation:
Department of Chemistry, University of North Carolina, Chapel Hill, NC 27514
Dieter P. Griffis
Affiliation:
Engineering Research Services Division, North Carolina State University, Raleigh, NC 27650
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Extract

The surface layers on coal fly ash particles are of special environmental interest in that concentration enrichments of trace elements may occur [1], thereby enhancing the potential bioavailability of toxic species. Little research, however, has been devoted to the analytical characterization of intraparticle and interparticle distributions of trace elements. The high detection sensitivity, spatial resolution, and depth profiling capabilities of secondary ion mass spectrometry (SIMS), coupled to digital image acquisition and processing [2], permit three-dimensional (3D) compositional maps for collections of individual micron-sized particles. The 3D analysis of trace element distributions in coal fly ash particles is the subject of this SIMS investigation

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 65: Symposium T – Fly Ash and Coal Conversion By-Products II , 1985 , 137
Copyright
Copyright © Materials Research Society 1986

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References

1. Linton, R.W., Williams, P., Evans, C.A. Jr. and Natusch, D.F.S., Anal. Chem. 49, 1514–1521 (1977).CrossRefGoogle Scholar
2. Bryan, S.R., Woodward, W.S., Griffis, D.P. and Linton, R.W., J. Micros. 138(1), 15–28 (1985).CrossRefGoogle Scholar
3. Lepareur, M., Rev. Tech. Thomson-CSF, 12, 225–265 (1980).Google Scholar
4. Bryan, S.R., Linton, R.W., Griffis, D.P., in Fifth International Conference on SIMS, Washington, DC, 1985 (in press)Google Scholar