Measurement of gas-phase hydroperoxides by chemical ionization mass spectrometry.
A new method for the detection of gas-phase hydroperoxides is described. The clustering chemistry of CF3O- is exploited to produce speciated measurements of several hydroperoxides with high sensitivity and fast time response. Correspondence of airborne observations made with this technique and the established HPLC method is illustrated. CF3O- appears to be a highly versatile reagent ion for measurements of both weak and strong acids in the atmosphere.
Crounse
John D
JD
Division of Chemistry and Chemical Engineering, California Institute of Technology, MC 150-21, 1200 East California Boulevard, Pasadena, California 91125, USA. crounjd@caltech.edu
McKinney
Karena A
KA
Kwan
Alan J
AJ
Wennberg
Paul O
PO