Table of Contents
Advertisement
Analyzer
The analyzer is the heart of the MSD
The analyzer ionizes the sample, filters the ions, and detects them. The
sample components exiting the GC column flow into the ion source. In the
ion source, the sample molecules are ionized and fragmented. The resulting
positive ions are repelled from the ion source into the quadrupole mass
filter. The mass filter allows selected ions to pass through the filter and
strike the detector. The detector generates a signal current proportional to
the number of ions striking it.
The analyzer is attached to the vacuum side of the side plate. The side plate
is hinged to allow easy access to the analyzer. Both the ion source and the
mass filter are independently heated. Each is mounted inside a radiator for
correct heat distribution.
Each of the parts of the analyzer is discussed in the following material.
The analyzer has four basic components
The analyzer consists of the following components:
• Ion source
• Mass filter
• Detector
• Heaters and radiators
216
Advertisement
Table of Contents
