| abstract |
A method and apparatus for processing ions in mass spectrometry is provided. nThe apparatus includes an ion processing cell (10) having segmented multipole rods (20,22,24,26) and a means (80,82) for admitting reactive reagent ions into the cell (10). Provision for timed sequence control of RF and DC voltages to the segmented multipole rods (20,22,24,26) is included. Processing includes trapping analyte ions and subjecting them to selected reactions with reactive reagent ions and/or physical manipulation of the ions by changing the characteristics of the electric field and/or creating discrete regions in the field. |