Page 9 - Shimadzu-MassSpectrometerCatalog

Generated ions are separated and
detected based on differences
in their mass-to-charge ratio (m/z value).

Quadrupole Models

Quadrupole mass spectrometers use a set of four parallel electrode
rods to form an electric field.
This electric field is used to separate ions passing through the space
formed by four rods based on their m/z value.
Triple quadrupole mass spectrometers use three sets of quadru-
poles configured in series to quantitatively analyze target molecules
in highly contaminated samples, such as pesticides in foods, with
extremely high sensitivity levels.

Ion Source Quadrupole Detector

Time-of-Flight (TOF) Models

The velocity of ions, which is accelerated by a fixed electric voltage,
is depending on their m/z value.
The velocity of lower m/z ion becomes faster.
Time-of-flight mass spectrometer calculates m/z value from the ion
velocity, i.e., time of flight of each ion, which takes to travel a fixed
distance.

Ion source Detector

Hybrid Models

Hybrid mass spectrometers are a combination of an ion trap mass
spectrometer and a time-of-flight mass spectrometer.
An ion trap consists of two end cap and one single ring electrodes.
An electric field formed by single ring electrode can trap ions in the
space.
A key feature of ion trap is high sensitive analysis and MS n analysis. Detector
Time-of-flight mass spectrometer can determine m/z values with
high accuracy. Ion Trap Dual Stage Reflectron

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