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求高手帮忙翻译一下,急啊!MassspectrometryAnAgilentXCTPlusiontrapmassspectrometer(ITMS)(AgilentTechnology,US)wasusedtoanalyzethefractions,Fr.1–10,obtainedfromethylacetateextracts.Atmosphericpressurechemicalionization(APC
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更新时间:2024-05-11 08:41:10
问题描述:

求高手帮忙翻译一下,急啊!

Massspectrometry

AnAgilentXCTPlusiontrapmassspectrometer

(ITMS)(AgilentTechnology,US)wasusedtoanalyze

thefractions,Fr.1–10,obtainedfromethylacetate

extracts.Atmosphericpressurechemicalionization

(APCI)MSwasperformedinthepositivemode.The

drygasandvaporisertemperatureswere350and

4008C,respectively.

FortheanalysisofCP1,Electrospray-Ionization

MassSpectrometry(ESI-MS)wasperformedusinga

WatersMicromassQ-Tofmicromassspectrometer

(Waters,USA).Samplewasdirectlyinfusedataspeed

of10ml/minforacquiringmassspectra.Thecapillary

andsampleconevoltagesweremaintainedat3.0kV

and50V,respectively.Thesourceanddesolvation

temperatureswere80and2508C,respectively.The

massspectrawereacquiredfromm/z100to5000in

thepositiveionmode.

Nuclearmagneticresonancespectrometry(NMR)

TheNMRspectraofcompound1,CP1andCP2

wererecordedonaBrukerAdvanceAMX500NMR

spectrometer(Rheinstetten,Germany)at500.13MHz

113

(H)and125.75MHz(C),respectively.Tetramethyl-

silane(TMS)wasusedasaninternalstandard.

Compound1wasdissolvedinmethanol-d4;CP1and

CP2weredissolvedinD2O.

Statisticalanalysis

Themeanvalueswerecalculatedfromdatataken

fromatleastthreeseparateexperiments.Where

significancetestingwasperformed,aStudent’st-test

wasused;P-valuesof,0.05wereconsideredtobe

statisticallysignificant.

Results

NosignificantdifferencesinTEACvalueorHPLC

profileweredetectedbetweendifferentbottlesofthe

samecommercialbatch.Theantioxidantcomponents

inDSSwerefoundtobestableduring1–2months

storage,basedontheTEACvalueandtheirHPLC

profile.

Separationandcharacterizationoflowmolecularmass

components

DSSwasextractedwithmethanol,andthemethanol

ext

戴亚非回答:
  质谱分析法   美国安捷伦科技公司添加了XCT离子捕获迁移质谱,被用于分析片段,从乙酸乙酯提淬物中获得1-10的频率,大气压化学电离的毫秒在其过程中得以正确体现.干气以及蒸发器的温度分别达到350和4008摄氏度.
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