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容易污染质谱的化合物
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由Dr.John Langley,University of Southampton研究得出 如果有些峰一直都洗不掉，不妨找找看，在list里面有没有 Contamination Peaks - Positive Ion ES m/z Ion Compound 42 (M+H)+ acetonitrile 59 (M+NH4)+ acetonitrile 64 (M+Na)+ acetonitrile 65 (2M+H)+ methanol 79 (M+H)+ DMSO 83 (2M+H)+ acetonitrile 85 (M+H)+ d6-DMSO 101 (M+Na)+ DMSO 102 (M+H)+ triethylamine (TEA) 104/106 (M+Cu)+ acetonitrile 105 (2M+Na)+ acetonitrile 120 (M+Na+CH3CN)+ DMSO 122 (M+H)+ Tris 123 (M+H)+ dimethylaminopyridine (DMAP) 130 (M+H)+ diisopropylethylamine (DIPEA) 144 (M+H)+ tripropylamine (TPA) 145/147 (2M+Cu)+ acetonitrile 146 (3M+Na)+ acetonitrile 150 (M+H)+ phenyldiethylamine 153 (M+H)+ 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) 157 (2M+H)+ DMSO 159 (M+Na)+ sodium trifluoroacetate 169 (2M+H)+ d6-DMSO 179 (2M+Na)+ DMSO 186 (M+H)+ tributylamine 214 (M+H)+ unidentified contaminant, maybe related to methanol 225 (M+H)+ dicyclohexyl urea (DCU) 239/241 [(M.HCl)2-Cl]+ triethylamine 242 M+ tetrabutylammonium (C4H9)4N+ 243 M+ trityl cation 257 (3M+H)+ DMSO 273 M+ monomethoxytrityl cation (MMT) 279 (M+H)+ dibutylphthalate (plasticiser) 301 (M+Na)+ dibutylphthalate (plasticiser) 317 (M+K)+ dibutylphthalate (plasticiser) 338 (M+H)+ erucamide 360 (M+Na)+ erucamide 391 (M+H)+ diisooctyl phthalate (plasticiser) 413 (M+Na)+ diisooctyl phthalate (plasticiser) 425 (M+Na)+ unidentified contaminant (plasticiser) 429 (M+K)+ diisooctyl phthalate (plasticiser) 449 (2M+H)+ dicyclohexyl urea (DCU) 454 (M+Na+CH3CN)+ diisooctyl phthalate (plasticiser) 798 (2M+NH4)+ diisooctyl phthalate (plasticiser) 803 (2M+Na)+ diisooctyl phthalate (plasticiser) |
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4楼2008-07-06 21:59:38
2楼2008-07-05 20:31:41
