Online literature is provided as Adobe Acrobat Portable Document Format (PDF) files. Obtain your free copy of the current Acrobat Reader from Adobe Systems.

Improving Productivity and Extending Column Life with Backflush

Abstract: A previous application note [1] has shown that multiple GC signals and MS signals can be acquired from a single sample injection. When a 3-way splitter is connected to the end of a column, column effluent can be directed proportionally to two GC detectors as well as the MSD. This multi-signal configuration provides full-scan data for library searching, SIM data for quantitation, and element selective detector data for excellent selectivity and sensitivity from complex matrices. The milk extract example shows that a 7-minute 280 °C backflush cleaned the column as well as a 33-minute 320 °C bake-out. The cycle time was reduced by more than 30%. Using backflush, excess column bleed and heavy residues will not be introduced into the MSD, thus reducing ion source contamination.

View Article (0.69 MB)

For your convenience this PDF file will open in a separate window, and you may need to adjust your pop up blocker setting.