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This content will become publicly available on November 19, 2015

Title: Rectangular Ion Funnel: A New Ion Funnel Interface for Structures for Lossless Ion Manipulations

A recent achievement in Structures for Lossless Ion Manipulations (SLIM) is the ability for near lossless ion focusing, transfer, and trapping in sub-atmospheric pressure regions. While lossless ion manipulations are advantageously applied to the applications of ion mobility separations and gas phase reactions, ion introduction through ring electrode ion funnels or more conventional ion optics to SLIM can involve discontinuities in electric fields or other perturbations that result in ion losses. In this work, we investigated a new funnel design that aims to seamlessly couple to SLIM at the funnel exit. This rectangular ion funnel (RIF) was initially evaluated by ion simulations, fabricated utilizing printed circuit board technology and tested experimentally. The RIF was integrated to a SLIM-TOFMS system, and the operating parameters, including RF, DC bias of the RIF electrodes, and electric fields for effectively interfacing with a SLIM were characterized. The RIF provided a 2-fold sensitivity increase without significant discrimination over a wide m/z range along with greatly improved SLIM operational stability.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Biological Sciences Division
Publication Date:
OSTI Identifier:
1165165
Report Number(s):
PNNL-SA-105304
Journal ID: ISSN 0003-2700; 47418; 48135; KP1601010
Grant/Contract Number:
AC05-76RL01830; P41 GM103493
Type:
Published Article
Journal Name:
Analytical Chemistry
Additional Journal Information:
Journal Volume: 87; Journal Issue: 1; Journal ID: ISSN 0003-2700
Publisher:
American Chemical Society (ACS)
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Lossless Ion Manipulations; rectangular ion funnel (RIF); Environmental Molecular Sciences Laboratory