Thermo Scientific TSQ Quantum XLS Series User Guide 17
Functional Description
This chapter describes the principal components of the TSQ Quantum XLS Series systems
and their respective functions.
A functional block diagram of the TSQ Quantum XLS Series system is shown in Figure 7. A
sample transfer line connects the gas chromatograph (GC) to the mass spectrometer. The
autosampler and GC are installed on the left side of the mass spectrometer.
In analysis by GC/MS, you inject a sample into a GC column. The sample then separates into
its various components. The components elute from the GC column and pass through the
transfer line into the mass spectrometer where they are analyzed. You can also use a direct
sample probe to introduce sample into the mass spectrometer.
Electron ionization (EI) or chemical ionization (CI) ionizes sample molecules upon entering
the mass spectrometer. The ion optics focus and accelerate the resulting sample ions into the
mass analyzer where they are filtered according to their mass-to-charge ratios. An ion
detection system then produces a signal proportional to the number of ions detected. The
system electronics receive and amplify the ion current signal from the ion detection system.
That signal is then passed on to the data system for further processing, storage, and display.
The data system provides the primary mass spectrometer user interface.
Contents
• Autosampler (optional)
• Gas Chromatograph
• Direct Sample Probes (optional)
• Tr a n s f e r L i n e
• Mass Spectrometer
• Data System
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