Mass Spectrometry

Adduct Ions

 

Cationized Adducts

Anionized Adducts

[M+NH4]+


Mr + 18

 

[M+Na]-

 

Mr + 21

 

[M+Na]+



Mr + 23

 

[M+Cl]-

 

Mr + 35
[M+CH3OH+H]+


Mr + 33

[M+HCOO]-
Mr + 45
[M+K]+


Mr + 39
[M+OAc]-
Mr + 59
[M+CH3CN+H]+


Mr + 42
[M+K]-
Mr + 37
[M+DMSO]+


Mr + 79
[M+TFA]-
Mr + 113

 

Preformed

 

Preformed
M+; [M+H]+

Mr ; Mr +1
M-; [M-H]-
Mr ; Mr -1

 

H Tong et al (1999) J. Am. Soc. Mass Spec. 10, 1174-87