Negative ion field desorption mass spectra of some inorganic and organic compounds

Abstract

Field desorption of negative ions can be achieved below the threshold of field electron emission. To this end a mixture of the sample with polyethylene oxide and water was applied to smooth wire cathodes. The mass spectra of some inorganic and organic compounds are reported. Anionization by [CI]⁻ ion attachment is demonstrated with the examples of 20‐hydroxycholesterol and sucrose.