Which of the following problems occur when combining gas chromatography and mass spectroscopy?(a) Difference in operating pressures(b) Reduction in sensitivity(c) Direct identification is not possible(d) It does not permit direct introduction of the effluentI have been asked this question in an interview for job.I want to ask this question from Gas Chromatograph- Mass Spectrometer in section Mass Spectrometer of Analytical Instrumentation

Which of the following problems occur when combining gas chromatograph

1.	Which of the following problems occur when combining gas chromatography and mass spectroscopy?(a) Difference in operating pressures(b) Reduction in sensitivity(c) Direct identification is not possible(d) It does not permit direct introduction of the effluentI have been asked this question in an interview for job.I want to ask this question from Gas Chromatograph- Mass Spectrometer in section Mass Spectrometer of Analytical Instrumentation
Answer» Right answer is (a) Difference in OPERATING pressures The explanation: The problem that occurs when combining gas chromatography and mass SPECTROSCOPY is the difference in operating pressures. The pressure at the exit of the GC column is ATMOSPHERIC.

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