@谱 2,24三甲基戊烷 140 (57) (43) 29) M (15) (99(14 102030405067890100110120130140150
2,2,4 三甲基戊烷
@谱 CI CH-C-CH2-CH—CH (7) CH3 6 (43) M CH3 102030405的070890100110120130140150 CH3.++(-CH2--CH-CH3 me 99 CH3 CH3 CH3C++·CH2CH-CH3 mve CH3 CH3 CH2· +CH--CH3 CH3 e CH CH: CH3+ t CH2CH--CH3 15 CH H2 e
CH3 C CH2 CH3 CH3 CH CH3 CH3 +. CH3 . + CH2 CH3 CH3 CH CH3 C CH3 + m/e 99 CH3 C CH3 CH3 + + CH2 CH CH3 CH3 . m/e 57 CH3 C CH2 CH3 CH3 . + CH3 CH CH3 + m/e 43 CH3 + + CH2 CH3 CH3 CH CH3 CH3 .C m/e 15 CH3CH2 + m/e 29
@谱 (2)芳烃 分子离子峰强 甲苯m/e91(C,H2)为基峰C6HCH2+ 烷基芳烃91+14n—基峰 烷基C≥3,则H重排失去一个中性分子, 成m/e92峰
（2）芳烃 分子离子峰强 甲苯 m/e 91(C7H7 + ) 为基峰 C6H5–CH2 + 烷基芳烃 91+14n — 基峰 烷基 C3, 则 H 重排失去一个中性分子， 成 m/e 92 峰
谱 CH, CH, Ch, CH T CH3 CH2 CH2 e91 CH CH+ CH CH CH3
CH2CH2CH2CH3 CH2 m/e 91 + CH3CH2CH2 CH2 CH2 CH H CH3 +. CH2 H H CH2 CH CH3 m/e 92 . + +. . +