J. Stuart Grossert 

Adjunct Professor

BSc, MSc, PhD (Natal)

E-mail: j.s.grossert@dal.ca
Phone: (902) 494-3305
Fax: (902) 494-1310 
 
Research Interests: Mass Spectrometry.

My interests are broadly based and most involve collaborations with colleagues. My primary interest is in the study of fragmentation pathways of ions in the gas phase using tandem mass spectrometry, with emphasis on nitrogen, oxygen and sulfur-containing ions. These are mostly generated by electrospray ionization from neutral solutions; our work involves protonated or deprotonated species, as well as cationized molecules, and their solvent cluster ions.

Other work in progress includes developing analytical methods for the complex mixtures of heavier polynuclear aromatic hydrocarbons and sulfur-containing aromatic compounds found in petroleum products. Studying the responses of these compounds to atmospheric pressure chemical ionization has led to new insights into the competition between the formation of radical cations and protonated molecules in this ionization technique.

In some ions, especially sulfur-containing ions, tandem MS/MS methods on ions from isotope clusters can yield useful fragmentation mechanism information. These interests have included the development of the ISOMABS utility program for calculations involving masses and isotopic abundances of ions.

Version 5.1 of this program is now available for free download at http://tarc.chemistry.dal.ca/soft_down.htm

Selected Publications