• precursor
  • For a precursor ion scan, the product ion is selected in the second mass analyzer, and the precursor masses are scanned in the first mass analyzer. (wikipedia.org)
  • In a product ion scan, a precursor ion is selected in the first stage, allowed to fragment and then all resultant masses are scanned in the second mass analyzer and detected in the detector that is positioned after the second mass analyzer. (wikipedia.org)
  • 4. The system of claim 1, wherein the precursor mass selection window widths are selected to contain the same number of mass values. (freepatentsonline.com)
  • fragments
  • The fragments are then accelerated out of the collision cell and enter Q3 which scans through the mass range, analyzing the resulting fragments (as they hit a detector). (wikipedia.org)
  • powerful
  • THPLC-Tandem Mass Spectrometry is a powerful analytical tool in order to define the fingerprint of the molecular species of complex mixture of polar lipid extracts, such as phospholipids (PL). This technique can be of interest in several research fields, such as biochemistry, food technology and the pharmaceutical industry. (univpm.it)
  • detector
  • High-resolution instruments are usually operated in an untargeted manner, which means that accurate mass information is collected on every ion that reaches the detector. (aacc.org)
  • modes
  • When tandem MS is performed with an in space design, the instrument must operate in one of a variety of modes. (wikipedia.org)