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[求助]
電噴霧質(zhì)譜為什么會有正離子模式和負(fù)離子模式?
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| 如題,小妹最近正準(zhǔn)備做這方面的內(nèi)容,文獻(xiàn)上有正負(fù)兩種模式,請教高人正離子模式和負(fù)離子模式測量出來的結(jié)果有區(qū)別么?他們測得不應(yīng)該都是掉落下的基團(tuán)么?為什么還要做兩種呢??求高人~~~~真心不懂~~ |
圖譜處理 | 實驗技能積累 |

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?????f???, ???????x????????????Compound???|???x??,???x??????????^?|???????,???????amine group???F?????????????,??鎧?|????F?????????????x??.?????????x??????,?????????????????????x??,??ESI???f???????????????????proton,H+,?K?γ?[M+H]+,?????@????п???????????Adduct ion?γ?[M+Na]????[M+K]???,?????????????????в???Y?? ??x?????????????x??????????,???????OH or COOH??????F??,?t???^??????proton????x????????,?????[M-H]-,?????f????phenol ????compound????????x????????. ???????N?x??,??????????????F??????Performance(sensitivity, selectivity??)???^?????????x??????^?????,?]??????????????????Щ???. ????????????????. ??????????????ESI??????x????,????????APCI,CI,????.?е???????????LCMS????,GCMS???.????PCI,NCI???,??????x????C?????治???,?@????????????Щ?????????^??. |
木蟲 (正式寫手)


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