The use of desorption/ionization on porous silicon mass spectrometry for the detection of negative ions for fatty acids

The study of low molecular weight compounds by matrix‐assisted laser desorption/ionization (MALDI) is difficult because of the presence of ions originating from the matrix in the low‐m/z range. In order to resolve these problems, new matrix‐free approaches were developed based on laser desorption/io...

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Bibliographic Details
Published in:Rapid communications in mass spectrometry 2006-01, Vol.20 (4), p.680-684
Main Authors: Budimir, Natali, Blais, Jean-Claude, Fournier, Françoise, Tabet, Jean-Claude
Format: Article
Language:English
Subjects:
Analytical chemistry
Anions - chemistry
Chemical Sciences
Fatty Acids - chemistry
Mass Spectrometry - instrumentation
Mass Spectrometry - methods
Molecular Structure
Organic chemistry
Polymers - chemistry
Porosity
Silicon - chemistry
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Summary:The study of low molecular weight compounds by matrix‐assisted laser desorption/ionization (MALDI) is difficult because of the presence of ions originating from the matrix in the low‐m/z range. In order to resolve these problems, new matrix‐free approaches were developed based on laser desorption/ionization from the surface of various materials such as graphite and porous silicon. Our work involves the use of ‘desorption ionization on porous silicon mass spectrometry’ (DIOS‐MS) in the negative ion mode to study fatty acid compounds. The potential of the DIOS‐MS technique is shown and an insight into the ionization mechanism provided. Copyright © 2006 John Wiley & Sons, Ltd.
ISSN:0951-4198
1097-0231
DOI:10.1002/rcm.2363