质谱中的一些离子
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
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 (TE A)
104/106 (M+Cu)+ acetonitr ile
105 (2M+Na)+ acetonitrile
120 (M+Na+CH3CN)+ DMSO
122 (M+H)+ Tris
123 (M+H)+ dimethylaminopyridine (DMA P)
130 (M+H)+ diisopropylethylamine (DIPE A)
144 (M+H)+ tripropy lamine (TP A)
145/147 (2M+Cu)+ acetonitrile
146 (3M+Na)+ acetonitrile
150 (M+H)+ pheny ldiethylamine
153 (M+H)+ 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU)
157 (2M+H)+ DMSO
159 (M+Na)+ sodium tr ifluoroacetate
169 (2M+H)+ d6-DMSO
179 (2M+Na)+ DMSO
186 (M+H)+ tributy lamine
214 (M+H)+ unidentified contaminant, maybe r elated 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 (plastic iser)
317 (M+K)+ dibutylphthalate (plastic iser)
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 (plastic iser)
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)