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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 43, Iss. 6 — Aug. 1, 1989
  • pp: 976–980

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

John T. Rowan and R. S. Houk

Applied Spectroscopy, Vol. 43, Issue 6, pp. 976-980 (1989)


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Abstract

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 \lesssim 100 counts sāˆ’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.

Citation
John T. Rowan and R. S. Houk, "Attenuation of Polyatomic Ion Interferences in Inductively Coupled Plasma Mass Spectrometry by Gas-Phase Collisions," Appl. Spectrosc. 43, 976-980 (1989)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-43-6-976

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