液氨中微量油含量测定方法的改进-豆柴文库

您所在位置：网站首页 / 液氨中微量油含量测定方法的改进.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

液氨中微量油含量测定方法的改进
Title:Improvementofthemethodfordeterminingtraceoilcontentinliquidammonia
Abstract:
Liquidammoniaiswidelyusedinindustriessuchasrefrigeration,chemicalsynthesis,andpharmaceuticals.However,eventraceamountsofoilcontaminationinliquidammoniacannegativelyimpactitsperformanceandstability.Therefore,itiscrucialtoaccuratelymeasuretheoilcontentinliquidammonia.Thispaperaimstodiscussthecurrentmethodsfordeterminingtraceoilcontentinliquidammoniaandproposeanimprovedmethodwithenhancedaccuracyandefficiency.
Introduction:
Thequalitycontrolofliquidammoniainvolvesthemeasurementofvariousimpurities,includingoilcontent.Thepresenceofoilinliquidammoniacanleadtotheformationofunwantedprecipitates,reducedheattransferefficiency,increasedcorrosionrates,andpotentialdamagetoequipment.Thecurrentmethodsfordeterminingtraceoilcontentinliquidammoniahavecertainlimitations,suchaslongeranalysistimes,highcost,andlowsensitivity.Therefore,animprovedmethodisrequiredtoovercometheselimitationsandprovidemoreaccurateresults.
Currentmethodsfordeterminingtraceoilcontentinliquidammonia:
1.Gravimetricmethod:Thismethodinvolvesextractingtheoilfromarepresentativesampleofliquidammoniausinganon-polarsolvent,followedbyevaporatingthesolventandweighingtheresidue.Althoughitisawidelyusedmethod,itrequiresmultiplestepsandistime-consuming.
2.Infrared(IR)spectroscopy:IRspectroscopycanbeusedtodetectoilcontaminationinliquidammoniabymeasuringthecharacteristicabsorptionpeaksofoilmolecules.Whilethismethodoffersrapidanalysis,itmaylacksensitivityindetectinglowerconcentrationsofoil.
3.Gaschromatography(GC):GCisahighlyprecisemethodformeasuringtraceoilcontentinliquidammonia.Itinvolvesvaporizingthesampleandseparatingtheoilcomponentsusingacapillarycolumn.However,GCrequiresexpensiveequipmentandspecializedtraining,makingitlessaccessibleforroutineanalysis.
Improvedmethodfordeterminingtraceoilcontentinliquidammonia:
Basedonthelimitationsofthecurrentmethods,animprovedmethodisproposed,whichcombinessolid-phasemicroextraction(SPME)andgas