Using Mass Spectrometers
Creating aQa MS Channels with the aQa PGM File

The examples below describe which channels Chromeleon creates for the different types of data acquisition with the aQa MS.

 Note:

For a list of SIM masses for anions, cations, and amines in water, refer to Using Mass Spectrometers  SIM Mass Lists for IC-MS.

The first example creates two SIM channels plus the TIC channel:

The SIM_01 channel records the chromatogram at a mass of 100 amu, while the SIM_02 channel records the corresponding chromatograms at a mass of 200 amu.

The second example creates six SIM channels and the TIC channel:

The channel assignment is as follows:

SIM_01: Mass 100 amu, positive voltage, 100V,

SIM_02: Mass 100 amu, negative voltage, -80V,

SIM_03: Mass 200 amu, positive voltage, 100V,

SIM_04: Mass 200 amu, negative voltage, -100V,

SIM_05: Mass 300 amu, positive voltage, 100V,

SIM_06: Mass 300 amu, positive voltage, 80V.

The third example creates three TICF channels and the TIC channel:

The channel assignment is as follows:

TICF1: positive voltage, 100V

TICF2: positive voltage, 200V

TICF3: negative voltage, -100V.

 Tip: 

When saving the PGM File, only use ASCII characters to name the entire path, i.e., including the datasource and the directories. If you use other characters, too, it may be impossible to start data acquisition.

If you notice after data acquisition that a channel is missing, you can extract separate Mass Traces (or mass ranges) from the Mass Spectrum and save them as new channels. (For more information, refer to Using Mass Spectrometers  Extracting Mass Traces Afterward.)