Accession Number:

AD0743453

Title:

Chemical Ionization Ion Cluster Mass Spectrometry

Descriptive Note:

Technical rept. Jun-Dec 1971

Corporate Author:

EDGEWOOD ARSENAL ABERDEEN PROVING GROUND MD

Report Date:

1972-05-01

Pagination or Media Count:

17.0

Abstract:

An extension of the technique of chemical ionization mass spectrometry utilizing moist N2 or air as the reactant gas has been studied. Ionic clustering reactions involving protonated water clusters and trace quantities of organic impurities are initiated in a corona discharge at pressures ranging from 20 to 220 Torr. The ionic reaction products are analyzed with a quadrupole mass spectrometer. A mechanism is proposed for the formation of ions of the type HH2OxAy where A is the trace impurity. Results of detection studies on dimethyl methylphosphonate concentration 0.6 mole parts per million or 3.3 micro gl and dimethyl sulfoxide are reported.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE