Kevin G. Owens, Ph.D.
Associate Professor of Chemistry
Department of Chemistry, Drexel University
3141 Chestnut Street
Philadelphia, PA 19104-2875
Office: Stratton Hall Room 415
Tel: (215) 895-2621
Fax: (215) 895-1265
E-Mail: kevin.owens@drexel.edu
Web: www.chemistry.drexel.edu/people/owens/owens.asp
Research Area: Analytical/Physical Chemistry
Research Interests:
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Biological and synthetic polymer analysis using matrix-assisted laser desorption/ionization (MALDI) time-of-flight mass spectrometry (TOFMS)
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Development of sample preparation techniques for quantitative MALDI analysis
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Gas-phase laser ionization time-of-flight mass spectrometry
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Development of laser spectroscopic techniques for combustion analysis
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Supersonic jet spectroscopy
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Development of correlation analysis and other chemometric techniques for automating the analysis of mass spectral information
Over the past several years we have provided a range of information that should be of interest to
the practicing mass spectrometrist on-line in an "open-source" format through the use of wikis:
The wiki provides details of how to mass calibrate a MALDI TOFMS using both peptide AND synthetic polymer
calibrants. Example data is shown illustrating some common pitfalls involved in using polymer calibrants
exclusively.
The wiki provides details of how to prepare samples for MALDI TOFMS analysis via electrospray deposition.
The wiki provides chemical and spectral information (including IR, solution-phase and solid-state UV-visible, and
MALDI TOFMS) about commonly used MALDI matrices and other matrix-like compounds.
Data Conversion Software: I've recently made available (in open source format through SourceForge
fidtojcamp.sourceforge.net) a small utility program
I wrote to convert data from the native Bruker FID format (collected using either XACQ or FlexControl) to a standard JCAMP format file.
Note that the utility allows the data to be written with the x-axis in either TOF or mass, which is particularly handy for
viewing the data in TOF format (as the newer FlexAnalysis software cannot display the data in this manner). Once the data
is in JCAMP format it can be viewed using JSpecView; this allows for the easy on-line sharing of data as well.
The wiki below includes resources for instrumental analysis educators:
A wiki resource for instructors involved with a chemical instrumental analysis course.
The wiki is a source of "home-grown" laboratory experiments and instrument operation
information.
