Study on Fragmentation Process of Thymidine by Mattauch-Herzog Geometry High Resolution Mass Spectrograph

Abstract

Abstract High resolution mass spectra of thymidine were studied by Mattauch-Herzog geometry mass spectrograph. The element map of it was presented and the fragmentation processes were shown by solid or dotted lines on the map. The spectra were measured with higher accelerating voltages (about 0.1%) in order to obtain many metastable peaks on the photographic plate. By a single focusing mass spectrometer ten metastable peaks were measured and “intentionally defocused” high resolution spectra gave twenty five diffused peaks with slight shifts to the high mass region though no metastable peaks were observed under normal operating conditions.