Analysis of Coal by Static Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS)

Pei, Lei; Jiang, Guilin; Baxter, Larry L.; Linford, Matthew R.

doi:doi:10.1116/11.20080402

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Surface Science Spectra / Volume 17 / Issue 1

Surf. Sci. Spectra 17, 1 (2010); http://dx.doi.org/10.1116/11.20080402 (67 pages)

Analysis of Coal by Static Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS)

Lei Pei¹, Guilin Jiang¹, Larry L. Baxter², and Matthew R. Linford¹

¹Brigham Young University, Chemistry and Biochemistry, C100 BNSN, Provo, UT 84602
²Brigham Young University, Chemical Engineering, 350 CB, Provo, UT 84602

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(Published online 7 November 2011)

Abstract

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Coal remains a primary fuel for power generation. Herein we present time-of-flight secondary ion mass spectra (ToF-SIMS data) taken with a Ga primary ion beam from ca. 30 coal specimens. These commercially different coal specimens were obtained from coal mining companies and/or power plants. They represent all major coal types used in power generation (bituminous coals, subbituminous coals, and lignites), and include low-rank materials (lignites and subbituminous coals), which are represented as a minor portion of the data. Often, inorganic ions (Na⁺, Al⁺, Si⁺, and K⁺) are pronounced in the spectra, overshadowing peaks from organic moieties. This reflects the high sensitivity of SIMS under our analysis conditions for these inorganic species. These results, including a previous, published chemometrics analysis of this data (L. Pei, G. Jiang, B. J. Tyler, L. L. Baxter, and M. R. Linford, Energy & Fuels 2008, 22, 1059), suggest that ToF-SIMS can be a useful method for coal analysis.

ACKNOWLEDGMENTS

We acknowledge Alliant Power Systems, Southern Company, and Tennessee Valley Authority for providing samples of coal. Financial support comes from different industrial sponsors of one of the author’s (LLB) research.

Article Outline

INTRODUCTION
SPECIMEN DESCRIPTION (Accession #s 01112, 01113, 01114, 01115, 01116, 01117, 01118, 01119, 01120, 01121, 01122, 01123, 01124, 01125, 01126, 01127, 01128, 01129, 01130, 01131, 01132, 01133, 01134, 01135, 01136, 01137, 01138, 01139, 01140, 01141, 01142, 01143, 01144, 01145, 01146, 01147)
INSTRUMENT DESCRIPTION
CALIBRATION

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KEYWORDS and PACS

Keywords

coal, ion beam effects, mining, power generation control, power plants, secondary ion mass spectra, time of flight mass spectroscopy

PACS

82.80.Ms

Mass spectrometry (including SIMS, multiphoton ionization and resonance ionization mass spectrometry, MALDI)
82.80.Rt

Time of flight mass spectrometry
89.30.ag

Coal

History

Received 5 April 2008
Accepted 21 January 2010
Published online 7 November 2011

Digital Object Identifier

http://dx.doi.org/10.1116/11.20080402

PUBLICATION DATA

ISSN

1055-5269 (print)

1520-8575 (online)

Publisher

American Vacuum Society

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