TY - JOUR
T1 - Measurement of initial translational energies of peptide ions in laser desorption/ionization mass spectrometry
AU - Pan, Ying
AU - Cotter, Robert J.
PY - 1992
Y1 - 1992
N2 - The initial kinetic energy distribution of [Arg]‐vasopressin molecular ions generated by matrix‐assisted UV laser desorption/ionization was measured using a delayed ion extraction, linear time‐of‐flight mass spectrometer. Energy distributions of the nicotinic acid matrix ions, with or without the presence of peptide, were also measured. These were compared with the kinetic energy distribution of gramicidin‐S ions using IR laser desorption. The measured molecular ion kinetic energy distribution from vasopressin is much broader than that from gramicidin‐S, and is characterized by a high‐energy tail that most likely results from entrainment of anlayte ions in the higher velocity matrix ions and fragments as they leave the surface.
AB - The initial kinetic energy distribution of [Arg]‐vasopressin molecular ions generated by matrix‐assisted UV laser desorption/ionization was measured using a delayed ion extraction, linear time‐of‐flight mass spectrometer. Energy distributions of the nicotinic acid matrix ions, with or without the presence of peptide, were also measured. These were compared with the kinetic energy distribution of gramicidin‐S ions using IR laser desorption. The measured molecular ion kinetic energy distribution from vasopressin is much broader than that from gramicidin‐S, and is characterized by a high‐energy tail that most likely results from entrainment of anlayte ions in the higher velocity matrix ions and fragments as they leave the surface.
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U2 - 10.1002/oms.1210270103
DO - 10.1002/oms.1210270103
M3 - Article
AN - SCOPUS:84989064972
VL - 27
SP - 3
EP - 8
JO - Journal of Mass Spectrometry
JF - Journal of Mass Spectrometry
SN - 1076-5174
IS - 1
ER -