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Study on Adsorption Behavior of Rare Earth Complexes on Nanometer-Size Titanium Dioxide with ICP-AES
Inrecentyears ,rareearthelements (REEs)havebeenwidelyusedinfunctionalmaterials ,cata lystsandotherproductsinindustry ,diagnosisreagentsofmagneticresonanceimaging (MRI)inmedicineandsomefertilizersinagricultureespeciallyinChina .However,asaresultoftheirusage ,moreandmoreREEsaregettingintotheenvironment,andalsointohumanbodyviafoodchain[1,2 ] .Itisnotclearwhetherrareearthelementsareessentialforman ,soitisveryurgenttostudythebiologicaleffectofrareearthelementsinhumanhealthandenvironment .Inthes… 相似文献
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利用自合成的碳硅凝胶为吸附材料,以铜试剂[二乙基二硫代氨基甲酸钠(NaDDTC)]为柱前衍生化试剂。在优化的实验条件下,于pH4.6的缓冲介质中在线预富集Al(Ⅲ),Cr(Ⅵ),Cu(Ⅱ),Fe(Ⅲ),Pb(Ⅱ),V(Ⅴ)和Zn(Ⅱ).采用停流技术洗脱,富集倍数可达8.1~12.6倍,检出限为ng/mL级。对高纯氧化铕(Eu2O3)中的非稀土杂质进行测定,可避免大量稀土基体对测定的干扰。 相似文献
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A method for determination of trace rare earth elements in biological sample by ICP-AES withtungsten-spiral electrothermal vaporization(TETV-ICP-AES)sampling has been developed in this work.Several influencing factors including desolvation and vaporization parameters,carrier gas flow rate and ma-trix effect were investigated in detail.Under optimal experimental conditions,the detection limits for La,Nd,Gd,Dy,Ho,Yb,Lu and Y were obtained in the range of 10~(-9)~10~(-11) g,and they are comparable to and,inmost instances,better than those for the GFAAS and conventional pneumatic nebulisation-ICP-AES.Theprecision(RSD)obtained for this method is less than 6%. 相似文献
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DeterminationofTraceAmountofVanadiuminHighPurityY_2O_3byElectrothermalVaporization-ICP-AESwithBi(PDC)_3CoprecipitationHuBin;Ya?.. 相似文献
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本文对近年来流动注射分析(FIA)技术在原子吸收光谱间接测定法中的应用进行了综述.涉及的FIA技术包括单流路系统,合并带技术,连续液-液萃取和连续沉淀-溶解. 相似文献
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Study of Direct Determination of Trace Lanthanum in Biological Samples by ICP-AES Combined with Fluo
StudyofDirectDeterminationofTraceLanthanuminBiologicalSamplesbyICP-AESCombinedwithFluorinationElectrothermalVaporizationTechn... 相似文献
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In order to eliminate influence of the carriers on the evaporation of rare earth elements in DC arc,a de-vice which introduces axially the sample aerosol has been designed to study the effects of controlled-atmos-phere,discharge current,electrode polarity and introduction direction of aerosol on the emission of rare earthelements in DC arc discharge.The influence of various matrices and carriers on the line density and excitationcondition of rare earth elements have also been studied,then the related excitation mechnism is proposed. 相似文献