Rapid and efficient fragmentation of ions in an ion trap for MS/MS analysis is achieved by a pulsed fragmentation technique. Ions of interest are placed at an elevated value of Q and subjected to a relatively high amplitude, short-duration resonance excitation pulse to cause the ions to undergo collision-induced fragmentation. The Q value of the ions of interest is then rapidly reduced, thereby decreasing the low-mass cutoff and allowing retention and subsequent analysis of low-mass ion fragments.

 
Web www.patentalert.com

< Amphiphilic compounds having a dendritic branch structure

< Membrane scaffold proteins

> Apparatus and method for inserting an intra-aorta catheter through a delivery sheath

> Method of using an adenoviral vector encoding a retinoblastoma protein to treat hyperproliferating cells

~ 00288