Department of Chemistry Mass Spectrometry Facility
Science and Technology Building, Rooms 453 and 459
Dr. Subodh Dutta, Instrument Specialist
The Department of Chemistry at East Carolina University is equipped with two mass spectrometers (MS): an Agilent 6890 gas chromatograph (GC) coupled to a JEOL double-focusing mass spectrometer, and a Waters Acquity ultra-high performance liquid chromatograph (LC) paired with a Micromass quadrupole/time-of-flight mass spectrometer (Q/ToF). Currently, we are evaluating the usage of the instruments to determine what hourly rates to charge in the future.
LC/MS (Q/ToF) samples: Appropriate samples are less volatile, higher molecular weight analytes amenable to Electrospray Ionization (ESI) or Atmospheric Pressure Chemical Ionization (APCI). Refer to these guidelines for preparing your sample at the appropriate concentration and in a suitable solvent system for ESI.
GC/MS samples: Samples should be low molecular weight (< 500 Da) and volatile. Electron Ionization (EI) and Chemical Ionization (CI) are the ionization techniques available on this instrument. Walk-up usage of the GC/MS is allowed by trained faculty and students. Training sessions are held 3 to 4 times per year.
Sample Preparation Information
Scheduling (via Faces)
Monoisotopic Masses for Some Elements
Monoisotopic Masses for Amino Acids