Why are electron capture negative ion mass spectra not reproducible? An ion source problem
نویسندگان
چکیده
منابع مشابه
POSITIVE AND NEGATIVE ION MASS SPECTRA OF RING - SUBSTITUTED NITROBENZENES
The 70 ev positive and negative ion mass spectra of ring-substituted nitrobenzenes were studied. The influence of the substituent group on the fragmentation modes of the molecular ions is discussed. The effect of pressure in the formation of negative ions was also studied. As expected, the ratio of fragment ions to negative molecular ions decreased with increasing pressure in ion source.
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ژورنال
عنوان ژورنال: Journal of the American Society for Mass Spectrometry
سال: 1993
ISSN: 1044-0305,1879-1123
DOI: 10.1016/1044-0305(93)85091-b