ESI / APCI Adduct Ion Calculator

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Ion Name Ion Mass Charge Adduct Ion Mass ▲(M+ : Adduct)

1. Positive-Ion Mode
M+H M + 1.007276 1+
M+NH4 M + 18.033823 1+
M+Na M + 22.989218 1+
M+CH3OH+H M + 33.033489 1+
M+K M + 38.963158 1+
M+ACN+H M + 42.033823 1+
M+2Na-H M + 44.971160 1+
M+ACN+Na M + 64.015765 1+
M+2K+H M + 76.919040 1+
M+DMSO+H M + 79.02122 1+
M+2ACN+H M + 83.060370 1+
2M+H 2M + 1.007276 1+
2M+NH4 2M + 18.033823 1+
2M+Na 2M + 22.989218 1+
2M+3H2O+2H 2M + 28.02312 2+
2M+K 2M + 38.963158 1+
2M+ACN+H 2M + 42.033823 1+
2M+ACN+Na 2M + 64.015765 1+
2. Negative-Ion Mode ▲(M- : Adduct)
M-H M – 1.007276 1-
M+Na-2H M + 20.974666 1-
M+Cl M + 34.969402 1-
M+K-2H M + 36.948606 1-
M+HCOOH-H M + 44.998201 1-
M+CH3COOH-H M + 59.013851 1-
M+Br M + 78.918885 1-
M+TFA-H M + 112.985586 1-
2M-H 2M – 1.007276 1-
2M+HCOOH-H 2M + 44.998201 1-
2M+CH3COOH-H 2M + 59.013851 1-
3M-H 3M – 1.007276 1-
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