Simulations and experimental investigation of atmospheric transport in an ambient metastable-induced chemical ionization source

Analytical Chemistry
Glenn A Harris, Facundo M Fernandez

Abstract

Since its inception, Direct Analysis in Real Time (DART) has seen utility in a wide range of applications including chemical reaction monitoring, pharmaceutical screening, and forensic mass spectrometry. Despite the growing interest in DART applications, there has been limited research into the fundamental physiochemical phenomena affecting sampling, ionization, and atmospheric ion transport. Presented here are the first experimentally validated finite element method simulations of an ambient DART-type metastable-induced chemical ionization source. It was found that complex coupled fluid dynamics, heat transfer, and electrostatic phenomena within the sampling region determine the variability in ion transmission efficiencies affecting the overall sensitivity of analysis. Particle tracing plots of a circular acetaminophen tablet placed in various positions and orientations yielded insight into optimal sample placement and evidence for sweet spots conducive to better ion transport. Experiments in a wide range of electric field conditions were performed, finding that under optimum sample placement, sensitivity could be improved by as much as 128% if ion mobility contributions were minimized.

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Citations

Sep 17, 2013·Analytical and Bioanalytical Chemistry·Jürgen H Gross
Nov 3, 2011·Journal of the American Society for Mass Spectrometry·Glenn A HarrisFacundo M Fernández
Sep 15, 2009·Journal of the American Society for Mass Spectrometry·Huanwen ChenRenato Zenobi
Oct 13, 2009·Journal of the American Society for Mass Spectrometry·Manshui ZhouFacundo M Fernández
Feb 26, 2010·Journal of the American Society for Mass Spectrometry·Glenn A HarrisFacundo M Fernández
Jan 11, 2013·Chemical Reviews·María Eugenia MongeFacundo M Fernández
Jul 20, 2010·Annual Review of Analytical Chemistry·Min-Zong HuangJentaie Shiea
Jul 9, 2014·Journal of the American Society for Mass Spectrometry·Adam KaylorFacundo M Fernández
Jul 30, 2014·Analytical and Bioanalytical Chemistry·Anastasia AlbertCarsten Engelhard
Feb 18, 2016·Journal of the American Society for Mass Spectrometry·Joel D KeelorFacundo M Fernández
Nov 18, 2014·Expert Opinion on Drug Discovery·Urvi Gala, Harsh Chauhan
Sep 25, 2014·Mass Spectrometry Reviews·Michel WagnerGérard Hopfgartner
Jul 21, 2010·Forensic Science International : Synergy·Allison M Pfaff, Robert R Steiner
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Aug 11, 2011·Journal of Forensic Sciences·Susanne E Howlett, Robert R Steiner
Sep 10, 2015·Rapid Communications in Mass Spectrometry : RCM·Matthew CurtisFacundo M Fernández
May 16, 2015·Mass Spectrometry Reviews·Tianyang GuoTianwei Tan
May 2, 2015·Journal of the American Society for Mass Spectrometry·Liya ZhangYiyang Dong
Apr 22, 2015·Journal of the American Society for Mass Spectrometry·Mahdiar KhakinejadStephen J Valentine
Dec 17, 2014·Journal of the American Society for Mass Spectrometry·Gregory C DonohoeStephen J Valentine
Jun 28, 2016·Journal of Agricultural and Food Chemistry·Xiaoqiang ZhuZhen Zhou
Apr 2, 2017·Journal of the American Society for Mass Spectrometry·Xiaoling ZangFacundo M Fernández
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Oct 12, 2010·Analytical and Bioanalytical Chemistry·Arti T NavareFacundo M Fernández
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