Extracted Ion Chromatogram (EIC) and Selected Ion Monitoring (SIM)
Extracted Ion Chromatograms (EIC) show the response of a specific m/z value or range extracted from the TIC SCAN signal over a defined time range. For example, the following figure shows the TIC SCAN and an EIC that has been extracted for m/z 311.
Selected Ion Monitoring (SIM) signals show the response of a specific ion that has been configured in the acquisition method. All SIM signals are summed up to the TIC SIM signal, which is always available in a SIM result set. You can separately extract all configured selected ions from the TIC SIM signal. The following figure shows a TIC SIM, and an extracted SIM signal.
- Manually extract an EIC from the TIC SCAN signal
- Manually extract a selected ion chromatogram from the TIC SIM signal
- Extract a signal (EIC or SIM) from an MS spectrum
- Graphically extract an EIC from an MS spectrum
- Specify EIC integration parameters
- Automatically create EICs and SIM signals on reprocessing