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1、上海交通大学硕士学位论文移动络合反应界面的理论及其在富集和分离金属离子中的应用研究姓名:陈建锋申请学位级别:硕士专业:生物化工指导教师:曹成喜20070301新生成的两相:α′相和β′相;(2)络合剂和金属离子的浓度比在金属离子的富集效率中扮演着重要作用,通过改变上述反应物的浓度配比可以控制MCB的速度,当EDTA和金属离子的浓度比越大时,MCB的速度就越接近于络合物的电迁移速度,得到的富集倍数就越大;(3)通过理论推导的公式,理论预测的富集倍数和实验得到的富集倍数相符,证明了理论模型和公式的正确性,也因此可以根据富集要求来寻求最佳富集条件。关
2、键词:络合反应,EDTA,MCB,金属离子,富集~II~THETHEORYOFMOVINGCHELATIONBOUNDARYANDITSAPPLICATIONINSTACKINGANDSEPARATIONOFMETALIONSABSTRACTAstheimportantrolesoftracemetalinhumanbeingsandtheirlives,itisveryimportanttoanalyseanddetectthem.However,becausetheconventionalmetaldetectionmethodshavee
3、xpensivefeeandlowsensitivity,it’sveryurgenttodevelopnewmethods.Inthispaper,basedontheconceptofmovingchemicalreactionboundary(MCRB),amodeloftwometalions’movingchelationboundary(MCB)wascreatedbythestrongchelantEDTAanddivalentmetalions:copper(II)andcobalt(II).Thusthemodeloftwom
4、etalions’MCBwasestablished.FromtheMCBmodel,theexpressionsofthevelocityofMCBandthestackingefficiency(SE)werededucted.Toavoidgettingtheparametersdifficulttoobtainrequiredinthecalculationsinvolvedandsimplifythecomputation,averyconvenientandefficientdataprocessingmethodwasworked
5、outtovalidatethetheorybythelargetubeandcapillaryelectrophoresis(CE)experiment.Theexperimentalresultswellaccordwiththeprediction,theyshowed:(1)Threeboundariesexistinthetwometalions’MCBsystem,the2-2-MCB,[Cu-EDTA]and[Co-EDTA]complexboundary(CB).Thenew~III~complexarebetweentwobo
6、undariesandthenewphaseswhichwecalledphaseα′andβ′arebetweentheboundaries;(2)Theratiooftheconcentrationsoftheabovetworeactantsplaysanimportantroleinthestackingefficiencyofmetalions,andthelargertheratiois,thehigherthestackingefficiencyturns;(3)Byexpressionsofthetheory,thestacki
7、ngefficienciesobtainedfromexperimentalresultsarewellaccordwiththepredictedones,whichcanprovetheMCBmodelandexpressions.Bythis,theoptimumconditionscanbepredictedaccordingtothestackingandseparationrequirement.KEYWORDS:Chelation,EDTA,MCB,Metalions,Stacking~IV~上海交通大学硕士学位论文符号及缩写说明
8、符号及缩写说明物理量:2A:横截面积(m)-1C:物质浓度(mol·L)D:实验开始后某段时间内物质移动距离(m)-1E:电场强度(V·m)-1κ:电