Measurement of gas kinetic temperatures for polyatomic ions in inductively coupled plasma-mass spectrometry: Validation and refinements

2011 ◽  
Vol 66 (3-4) ◽  
pp. 248-254 ◽  
Author(s):  
Sally M. McIntyre ◽  
Jill Wisnewski Ferguson ◽  
Travis M. Witte ◽  
R.S. Houk
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Polyatomic Ions ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry

Attenuation of Polyatomic Ion Interferences in Inductively Coupled Plasma Mass Spectrometry by Gas-Phase Collisions

1989 ◽  
Vol 43 (6) ◽  
pp. 976-980 ◽  
Author(s):  
John T. Rowan ◽  
R. S. Houk
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Inductively Coupled Plasma ◽  
Low Energy ◽  
Polyatomic Ions ◽  
Inductively Coupled ◽  
Ion Molecule Reactions ◽  
Plasma Mass Spectrometry ◽  
Background Ions

A double quadrupole arrangement to remove polyatomic ions by collisions with an added target gas has been evaluated. The ions Ar2+, ArO+, and ArN+ were attenuated by factors of 50–400 to count rates of ≤100 counts s−1. Fifty to seventy percent of the analyte ions were retained. Removal of polyatomic ions and retention of analyte ions were favored by low-energy collisions with Xe or CH4 rather than typical target gases like N2 or Ar. Products of ion-molecule reactions between background ions and target gas in the first quadrupole could be observed.

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