Director of the Mass Spectrometry Facility:
Dr. Rudolph E. K. Winter

Mass Spec Form

Contact Persons:   
Mr. Joe Kramer:   Tel: (314) 516-5120; e-mail:
Dr. Rudolph E. K. Winter:Tel: (314) 516-5337; e-mail:

The mass spectrometry facility is housed in a 1000 sq ft laboratory located in the UMSL Research Building (R003). In addition to the three mass spectrometers described below, there are areas for data processing, instrument maintenance, parts storage and sample preparation.  The instrumentation is used for support of research and teaching. 

Hewlett Packard GC/MS System Model 5988A 
For routine mass spectral analysis following capillary column gas chromatographic (GC) separation with:

  • Electron impact (EI) and chemical ionization (CI) capabilities

  • Positive and negative ion detection

  • An extended-mass quadrupole

  • A solids probe

  • Work stations for data processing and library spectral searching

JEOL MStation [JMS-700] Mass Spectrometer
(supported by a grant from the National Science Foundation) 
A high-performance magnetic sector mass spectrometer for both high and low resolution mass spectral analysis equipped for:

  • Fast Atom Bombardment (FAB) ionization, Electrospray Ionization (ESI) and Atmospheric Ion Chemical Ionization (APCI) as well as EI and CI methods

  • Positive and negative ion detection

  • Linked scan measurements

Shimadzu 2010A LCMS

  • LCMS System with 4 solvent pumps, column oven, diode array detector and single quad mass-spec.

  • Positive and Negative Ion Detection