QUADRUPOLE ION-TRAP MASS-SPECTROMETRY - THEORY, SIMULATION, RECENT DEVELOPMENTS AND APPLICATIONS

This paper is a presentation of recent key developments in quadrupole ion trap mass spectrometry. These key developments have been made in t hree areas; namely, the trapping of ions generated externally to the i on trap, the fine control of the trajectories of ions confined within the ion trap, and the ejection of ions from the ion trap. Applications of quadrupole ion trap mass spectrometry that are illustrative of the se developments are discussed. The origin of the quadrupole ion trap a nd its mode of current usage are discussed briefly. (C) 1998 John Wile y & Sons, Ltd.