Hydrogen as a GC/MS carrier and buffer gas for use in forensic laboratories.
A custom set of ion volumes was manufactured in order to investigate the gain and byproducts using hydrogen as a buffer gas following electron ionization in a quadrupole ion trap mass spectrometer as compared with helium. Analyses of illicit drugs such as cocaine, codeine, and oxycodone, and explosives such as TNT, RDX, and HMTD with ion volume exit orifices of 1mm, 2mm, 4mm, 6mm, 8mm and 10mm were performed using GC/MS. Strong similarities between hydrogen and helium spectra of illicit drugs and explosives provide evidence that hydrogen can be used effectively as a buffer gas in an ion trap mass spectrometer.
Department of Chemistry, University of North Texas, Denton, TX 76201, USA.
Chinyere N
CN
Nnaji
Department of Chemistry, University of North Texas, Denton, TX 76201, USA.
Kristina C
KC
Williams
Department of Chemistry, University of North Texas, Denton, TX 76201, USA.
Jonathan M
JM
Bishop
Department of Chemistry, University of North Texas, Denton, TX 76201, USA. Electronic address: gverbeck@unt.edu.
Guido F
GF
Verbeck
Buffer gas; Carrier gas; Energetic materials; GC–MS; Hydrogen; Illicit drugs