Les spectres de masse

Fragments moléculaires

Masse molaire (g/mol)	Fragment (charge + omise)
14	CH2
15	CH3
16	O
17	OH
18	H2O, NH4
19	F
26	CN, C2H2
27	C2H3
28	C2H4, CO
29	C2H5, CHO
30	CH2NH2
31	CH2OH
32	O2
33	SH
34	H2S
35	Cl
36	HCl
39	C3H3
41	C3H5
42	C3H6, C2H2O
43	C3H7, CH3C=O
44	CH2CHO
45	CH3CHOH, CH2CH2OH, CH2OCH2, COOH
46	NO2
47	CH2SH
48	CH3S + H
49	CH2Cl
51	CHF2, C3H3
53	C4H5
54	CH2CH2CN
55	C4H7
56	C4H8
57	C4H9, C2H5C=O
58	CH3C(=O)CH2 + H, C2H5CHNH2
59	C3H6OH, CH2OC2H5
60	CH2COOH
61	CH3COO
65	C5H5
66	C5H6
67	C5H7
68	CH2CH2CH2CN
69	C5H9, CF3
70	C5H10
71	C5H11, C3H7C=O
76	C6H4
77	C6H5
78	C6H5 + H
79	C6H5 + 2H, Br