To add a specific ion as a compound to the processing method, you can use either an Extracted Ion Chromatogram (EIC or SIM) or an MS spectrum.
Prerequisites
To be able to carry out the procedure as described, you need the privileges Data Processing > Do manual compound identification. Privileges are configured in the Control Panel.
From an MS spectrum:
In the MS Spectrum window, right-click the relevant m/z value, then select Add ion as compound to the method.
The new compound is listed in the compound table of the processing method. The signal for the compound is set corresponding to the selected m/z value. The corresponding EIC or SIM will be extracted on next reprocessing.
If you get the message Add ion as compound to the method - No peaks found, adjust your integration parameters for extracted chromatograms: In the processing method, go to the Integration Events > Standard page, set specific values for EIC or SIM signals, and choose lower values for Area Reject and Height reject. Reprocess, then try it again.
From an EIC or SIM:
In the Chromatograms window, right-click the peak in the EIC signal, then select Add peak as compound to the method.
The new compound is listed in the compound table of the processing method. The signal for the compound is set corresponding to m/z value that was used to create the EIC or SIM.
From a TIC SCAN:
In the Chromatograms window, right-click the peak in the TIC SCAN signal, then select Add peak as compound to the method.
The new compound is listed in the compound table of the processing method. The signal for the compound is set to the TIC SCAN signal that you used.