Complex Mixture Analysis by FT-Ion Cyclotron Resonance Mass Spectrometry
Presenter: Amy McKenna
Published: December 2008
Age: 14-19 and upwards
Views: 1204 views
The ultrahigh mass resolving power and sub-ppm mass accuracy of Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) allow the assignment of a unique molecular formula to each peak in the mass spectrum. Ionization methods for petroleum and crude oil successfully coupled to ultrahigh-resolution FT-ICR MS include electrospray,1-3 field ionization4, field desorption5, and most recently, APPI 6, 7. APPI is able to ionize both polar (pyridinic and pyrrolic nitrogen) and nonpolar compounds (such as PAH, PASH etc.) efficiently at atmospheric pressure. Ionization methods such as ESI and APPI, instrumental configuration, data reduction and interpretation will be reported, along with representative current applications to petroleum and its associated products.