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Matrix-Assisted Infrared-Laser Desorption-Ionization Mass Spectrometry of Organic Molecules on NaNO3

Published online by Cambridge University Press:  10 February 2011

D. R. Ermer ,
M. Baltz-Knorr ,
D. Nakazawa ,
M. R. Papantonakis  and
R. F. Haglund Jr
D. R. Ermer
Affiliation:
Physics Department, Reed College, 3203 SE Woodstock Boulevard, Portland, OR 97202-8199
M. Baltz-Knorr
Affiliation:
Physics Department, Reed College, 3203 SE Woodstock Boulevard, Portland, OR 97202-8199
D. Nakazawa
Affiliation:
Department of Physics and Astronomy and W. M. Keck Foundation Free-Electron Laser Center, Vanderbilt University, Nashville TN 37235
M. R. Papantonakis
Affiliation:
Physics Department, Reed College, 3203 SE Woodstock Boulevard, Portland, OR 97202-8199
R. F. Haglund Jr
Affiliation:
Department of Physics and Astronomy and W. M. Keck Foundation Free-Electron Laser Center, Vanderbilt University, Nashville TN [email protected]
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Abstract

We demonstrate sensitive mass identification of model organic compounds directly from sodium nitrate by infrared matrix-assisted laser desorption and ionization mass spectrometry. Sensitivity limits of order 10−6 are achieved for resonant desorption, with a linear calibration verified for crown ether molecules over almost three decades in concentration. We also have observed that crown ether molecules can abstract atomic sodium from the sample when irradiated at the resonant frequency of the NO3 stretching vibrations around 7.1 μm. A model for this process is proposed which suggests great promise for this technique on untreated tank waste.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 613
Copyright
Copyright © Materials Research Society 2000

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References

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