Static secondary ionization mass spectrometry detection of cyclohexylamine on soil surfaces exposed to laboratory air

Autor: Groenewold, G. S., Ingrain, J. C., Gianotto, A. K., Appelhans, A. D., Delmore, J. E.
Zdroj: Journal of the American Society for Mass Spectrometry; February 1996, Vol. 7 Issue: 2 p168-172, 5p
Abstrakt: Cyclohexylamine (CHA) is a common indoor air contaminant, which rapidly adsorbs to aluminosilicate soil samples. Static secondary ion mass spectrometry was used to study soil samples exposed to both CHA and CHA-d11, and the results showed (1) abundant [M+H]+and fragment ions that originated from CHA, (2) an initial concentration of CHA equivalent to approximately 0.2 monolayer, and (3) a possible exchange reaction where excess CHA-d11displaces CHA originally adsorbed to the surface. CHA was not removed from the surface by prolonged exposure to vacuum conditions (5×10-7torr), which indicates that CHA strongly adsorbs to aluminosilicate surfaces and should be expected as an endogenous surface contaminant where the chemical is used as a corrosion inhibitor.
Databáze: Supplemental Index
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