Chemical ionization mass spectrometry of nitrosamines.
The mass spectra of eight nitrosamines have been recorded, with excitation by chemical ionization (CI) and electron impact (EI). Comparison of the intensities of the base peaks under CI and El conditions gives intensity ratios in the range 1.4-1.9 for low resolution measurements and up to 10 for high resolution measurements, confirming the enhanced sensitivity available in the CI mode.
Fang
Y
Y
Department of Chemistry, China university of Science and Technology, Hefei, China.
Jiahua
D
D
Shili
L
L