36 Agilent 6400 Series Triple Quad LC/MS Concepts Guide
2 Inner Workings – Triple Quadrupole MS versus Single Quadrupole MS
How Triggered Dynamic MRM works
Example of Triggered MRM with four compounds
• The Scan type is set to Dynamic MRM and the Triggered
check box is marked. Repeats is set to 3.
• This Scan segments table has four different compounds.
• Each of these compounds has at least one Trigger transition.
You do not need to specify a Trigger transition for each
compound. If you do not, no secondary transitions are
triggered.
• Sulfachloropyridazine has two primary transitions and one
of these is the trigger transition.
• Sulfamethazine has two primary transitions and both of
these are trigger transitions.
• A compound does not have to have secondary transitions.
• If a scan is outside of the Trigger Window, then the
secondary transitions are not acquired.
• All of these compounds do have secondary transitions.
The secondary transitions for sulfadimethoxine are
311.1 m/z - > 156 m/z and 311.1 m/z -> 108 m/z.
• If a scan is outside of the Peak Retention Time window, then
the primary and the secondary transitions are not acquired.
Figure 16 Triggered MRM in the Scan Segments table
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