A Novel EI Source Optimized for Use with Hydrogen Carrier Gas in GC/MS and GC/MS/MS
Recent concerns with the price and availability of helium have led laboratories to look for alternative carrier gases for their GC/MS and GC/MS/MS systems. For GC/MS, hydrogen is the best alternative to helium. Among the problems encountered when converting to hydrogen carrier gas in GC/MS is that hydrogen is not an inert gas and may cause chemical reactions in the mass spectrometer electron ionization (EI) source. This can lead to disturbed ion ratios in the mass spectrum, spectral infidelity, and peak tailing. Therefore, a novel EI source for GC/MS and GC/MS/MS was developed and optimized for use with hydrogen carrier gas.
Samuel Haddad, Ph.D.
Application Development Chemist
Agilent Technologies, Inc.
Samuel Haddad is a GC Application Development Chemist at Agilent Technologies in Little Falls, Delaware. Samuel specializes in GC and GCMS applications of trace analysis in environmental and heavy matrix samples. His specialty includes sample preparation techniques to separate analytes from matrix components and extraction from a wide variety of matrix including water, fish, aquatic life, soil, and complex fluids. Samuel holds a Ph.D. in Environmental Science from Baylor University and a B.S in Biology from Southern Illinois University Edwardsville
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