pressure ionization

pressure ionization

[′presh·ər ‚ī·ə·nə′zā·shən]
(astrophysics)
A condition found in white dwarfs and other degenerate matter in which electron orbits overlap to the point that electrons in higher quantum levels are no longer associated with any particular nucleus and must be regarded as free.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
is an atmospheric pressure ionization source that can ionize gases, liquids and solids in open air under ambient conditions.
Monitoring the Degradation of Tetracycline by Ozone in Aqueous Medium Via Atmospheric Pressure Ionization Mass Spectrometry.
OPSIs are uncomplicated devices that enable varied means of introducing unprocessed samples into a solvent for rapid characterization by liquid introduction atmospheric pressure ionization mass spectrometry.
* The active exhaust atmospheric pressure ionization source with a robust orifice vacuum interface significantly enhances quantitative robustness for difficult samples;
Innovations in software and atmospheric pressure ionization technology make it a game changer for routine high-sensitivity, quantitative analysis.
The physicochemical processes involved in ion generation and transfer under atmospheric conditions [atmospheric pressure ionization (API)] are complex and modulated by numerous factors (16).
LC-MS/MS was formed by coupling HPLC to mass spectrometry (MS) through the use of atmospheric pressure ionization (API) sources such as electrospray ionization (ESI).
The system is an API (Atmospheric Pressure Ionization) hybrid IT (Ion Trap) and TOF (Time-of-Flight) MS, in contrast to the company's Axima QIT-TOF, which is a MALDI (Matrix Assisted Laser Desorption Ionization) instrument.
Scientists at the University of Nottingham (Department of Applied Biochemistry and Food Science, Sutton Bonington Campus, Loughborough LE12 5RD, England, U.K.) have used atmospheric pressure ionization to track the real-time release of volatiles from consumers as they eat.
Heller (19) recently showed that the analyte:matrix mass ratio can affect the analyte response and the analyte: internal standard response ratio, and proposed a matrix effect map concept to test for matrix effects in atmospheric pressure ionization MS.