Assume you are trying to develop a GC-MS instrument which would be used in the field (unit must be portable and robust) for the identification of relatively small compounds (<500 g/mol).  Assuming the GC (gas chromatograph) will separate the components prior to the MS, what type of ionization method (i.e. EI, CI, ESI, MALDI) and detector (i.e. magnetic sector, magnetic double sector,  quadrupole, ion trap, or time-of flight) would you choose and why?

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter33: High-performance Liquid Chromatography
Section: Chapter Questions
Problem 33.12QAP
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Assume you are trying to develop a GC-MS instrument which would be used in the field (unit must be portable and robust) for the identification of relatively small compounds (<500 g/mol).  Assuming the GC (gas chromatograph) will separate the components prior to the MS, what type of ionization method (i.e. EI, CI, ESI, MALDI) and detector (i.e. magnetic sector, magnetic double sector,  quadrupole, ion trap, or time-of flight) would you choose and why?

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