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Title: Method for reduction of selected ion intensities in confined ion beams

Patent ·
OSTI ID:871633
 [1];  [1];  [1]
  1. Richland, WA
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A method for producing an ion beam having an increased proportion of analyte ions compared to carrier gas ions is disclosed. Specifically, the method has the step of addition of a charge transfer gas to the carrier analyte combination that accepts charge from the carrier gas ions yet minimally accepts charge from the analyte ions thereby selectively neutralizing the carrier gas ions. Also disclosed is the method as employed in various analytical instruments including an inductively coupled plasma mass spectrometer.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
DOE Contract Number:
AC06-76RL01830
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Number(s):
US 5767512
OSTI ID:
871633
Country of Publication:
United States
Language:
English

References (9)

Ion-trap mass spectrometry with an inductively coupled plasma source journal January 1994
Performance of an inductively coupled plasma source ion trap mass spectrometer journal January 1994
Use of nitrogen and hydrogen in inductively coupled plasma mass spectrometry journal January 1992
Dissociation of analyte oxide ions in inductively coupled plasma mass spectrometry journal January 1994
Effects of hydrogen mixed with argon carrier gas in electrothermal vaporization-inductively coupled plasma-mass spectrometry journal April 1992
Alternatives to all-argon plasmas in inductively coupled plasma mass spectrometry (ICP-MS): an overview journal January 1993
Fast atom bombardment of solids as an ion source in mass spectrometry journal September 1981
The role of desolvation and hydrogen addition on the excitation features of the inductively coupled plasma journal January 1988
Radio-frequency glow discharge ion trap mass spectrometry journal July 1992

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method
reduction
selected
intensities
confined
beams
producing
beam
increased
proportion
analyte
compared
carrier
gas
disclosed
specifically
step
addition
charge
transfer
combination
accepts
minimally
selectively
neutralizing
employed
various
analytical
instruments
including
inductively
coupled
plasma
mass
spectrometer
analytical instruments
transfer gas
inductively coupled
mass spectrometer
carrier gas
coupled plasma
charge transfer
selectively neutralizing
analytical instrument
increased proportion
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