附录V___质谱中一些常见碎片离子

附录V 质谱中一些常见碎片离子

m/z 14 15 16 17 18 19 20 26 27 28 29 30 32 33 34 35 36 碎片 离 子 CH2 m/z 碎 片 离 子 OC-OC2H5,C3H7OCH2 73 CH3 O 74 OH H2O, NH4 F HF CN O(CH2-C-OCH3+H) 75 77 78 79 (COOC2H5 +2H), CH2SC2H5 C6H5 (C6H5+H) (C6H5+2H), Br C2H3 80 C2H4, CO, N2 C2H5, CHO 81 CH2NH2, NO CH2OH, OCH3 SH H2S Cl HCl

NHCH2,(CH3SS+H),HBr OCH2 82 83 85 86 87 (CH2)4C=N C6H11 C6H13, C4H9C=O (C3H7COCH2+H), C4H9CHNH2 COOC3H7 39 40 41 42 43 44 45 46 47 48 54 55 56 57 58 68 69 70 71

C3H3 CH2CN 88 (CH2COOC2H5 +H) 89 C3H5, (CH2CN+ H) (COOC3H7+2H),C C3H6 90 C3H7,CH3C=O CO2,(CH2CHO+H),CH3CHNH2 91 CH3CHOH,CH2CHOH,CH2OCH3 NO2 92 CH2SH,CH3S CH3S+H 94 CH2CH2C-N C4H7 95 C4H8 C4H9,C2H5C=O (CH3COCH2+H), C2H5CHNH2 97 (CH2)3CN CH3CHONO2,CH CH2 CH2+ HNCH2 O+ HNHC=O OC=O 96 (CH3)5CN C7H13,SCH2 C5H9,CF3, C3H5CO C5H10, (CH5CO+H) C5H11,C5H7C=O 99 100 C7H15 (C4H9COCH2+H), C5H11CHNH2

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