1977 Volume 50 Issue 12 Pages 3103-3106
The mass spectra of 1-alkenes ranging from C5 to C10 were measured at temperatures of the ion source 120–250 °C. Fragmentation M+\oversetm28→(M–28)+ and M+\oversetm28→(M–29)+, where m28 and m29 denote the metastable peaks of the fragmentations, were studied. The behavior of the curve of the intensity ratios R′28=m28⁄F28 and R′29=m29⁄F29(F28 and F29 denote the intensities of the (M–28)+ ion and the (M–29)+ ions, respectively), versus temperature T of the ion source of the mass spectrometer is explained by the quasi-equilibrium theory (QET).
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