Collision-Induced Dissociation of the Alkali-Metal Adduct Ions [M+c]^+ and [M+2c-H]^+ (c=Na and K) : Trolox and a Phospholipid
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概要
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Collision-induced dissociation (CID) spectra of sodium adduct [M + Na]+ and [M + 2Na - H]+ ions of Trolox and a phospholipid L-α-phosphatidyl-N-monomethylethanolamine, produced under fastatom bombardment conditions, have been compared with the corresponding CID spectra of potassium adduct [M + K]+ and [M + 2K - H]+ ions, in order to examine the influence of cation size on the CID patterns. While the CID spectra of mono-metal adduct ions [M + c]+ (c=Na and K) agreed with each other in pattern, the CID spectrum of dipotassium-adduct [M + 2K - H]+ ion of the phospholipid showed a definite pattern of chargeremote fragmentation and it was different from that of di-sodium adduct [M + 2Na - H]+ ion in fragment intensity. The CID spectra of di-metal adduct ions [M + 2c - H]+ (c=Na and K) gave a number of di-metal containing fragments. On the basis of the results obtained, the structures of alkali metal adduct [M + c]+ and [M + 2c - H]+ ions have been discussed.
- 日本質量分析学会の論文
- 1995-08-30
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