Monday, June 9, 2008

SIM / Sacn in 5975 MSD

General, full scan is the most common form of data collection due to the ease of setup and the availability of spectral libraries for compound confirmation.

That is to say: Signal for screening for unknowns or for structural information (CID).
SIM mode, on the other hand, offers significant improvement in sensitivity over full-scan.
SIM signal for quantification of target compounds.


How is Synchronous SIM/Scan performed? What are the benefits?

Synchronous SIM/Scan is an acquisition mode that enables collection of both SIM (Selected Ion Monitoring) data and full scan data in a single run.

The Agilent SIM/Scan mode combines the best of both SIM and full scan from a single sample injection to improve productivity.
Agilent MSD ChemStation's AutoSIM feature allows you to create a SIM method automatically from ANY existing full scan method. Once you create the SIM method you can run synchronous SIM/Scan.
The Agilent Synchronous SIM/Scan offers the following benefits:
• Confirmatory information – full scan data for library search capability.
•Maximun sensitivity - SIM data enables trace analysis.
•Automated setup conversion - The AutoSIM feature automatically processes full scan data of chemical standards into SIM acquisition parameters for use in the SIM/Scan method.