Determination of Trace Impurities of Rare Earth Elements in High Purity Yttrium Oxide by ICPMS

ＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＴｒａｃｅＩｍｐｕｒｉｔｉｅｓｏｆＲａｒｅＥａｒｔｈＥｌｅｍｅｎｔｓｉｎＨｉｇｈＰｕｒｉｔｙＹｔｔｒｉｕｍＯｘｉｄｅｂｙＩＣＰＭＳ￥ＬｉｕＪｉｎｇｌｅｉ；ＴｏｎｇＹｉｎｇｄｏｎｇ；ＺｈａｎｇＸｉｎｑｕａｎ（Ｃｅｎｔｒｅｏ...     

Determination of Trace Rare Earth Elements in Biological Samples by ICP-AES with Tungsten-spiral Electrothermal Vaporization Sampling

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%.     

Compilation of Q－data and Simulation of Q－spectra in Rare Earth Elements Analysis by Using ICP－AES

ＣｏｍｐｉｌａｔｉｏｎｏｆＱ－ｄａｔａａｎｄＳｉｍｕｌａｔｉｏｎｏｆＱ－ｓｐｅｃｔｒａｉｎＲａｒｅＥａｒｔｈＥｌｅｍｅｎｔｓＡｎａｌｙｓｉｓｂｙＵｓｉｎｇＩＣＰ－ＡＥＳＨｕｏＤｅｎｇ－Ｗｅｉ（霍登伟），ＹｉｎＸｉａｎｇ－Ｌｉａｎ（尹香莲），ＺｈａｏＧ...     

Study of Direct Determination of Trace Lanthanum in Biological Samples by ICP－AES Combined with Fluo

ＳｔｕｄｙｏｆＤｉｒｅｃｔＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＴｒａｃｅＬａｎｔｈａｎｕｍｉｎＢｉｏｌｏｇｉｃａｌＳａｍｐｌｅｓｂｙＩＣＰ－ＡＥＳＣｏｍｂｉｎｅｄｗｉｔｈＦｌｕｏｒｉｎａｔｉｏｎＥｌｅｃｔｒｏｔｈｅｒｍａｌＶａｐｏｒｉｚａｔｉｏｎＴｅｃｈｎ...     

Determination of Trace Amount of Vanadium in High Purity Y_2O_3 by Electrothermal Vaporization－ICP－AES With Bi（PDC）_3 Coprecipitation

ＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＴｒａｃｅＡｍｏｕｎｔｏｆＶａｎａｄｉｕｍｉｎＨｉｇｈＰｕｒｉｔｙＹ_２Ｏ_３ｂｙＥｌｅｃｔｒｏｔｈｅｒｍａｌＶａｐｏｒｉｚａｔｉｏｎ－ＩＣＰ－ＡＥＳｗｉｔｈＢｉ（ＰＤＣ）_３ＣｏｐｒｅｃｉｐｉｔａｔｉｏｎＨｕＢｉｎ；Ｙａ?..     

Direct Determination of Trace Titanium in High Purity Yttrium Oxide by FETV/ICP-AES

ＤｉｒｅｃｔＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＴｒａｃｅＴｉｔａｎｉｕｍｉｎＨｉｇｈＰｕｒｉｔｙＹｔｒｉｕｍＯｘｉｄｅｂｙＦＥＴＶ／ＩＣＰＡＥＳＰｅｎｇＴｉａｎｙｏｕ（彭天右），ＱｉｎＹｏｎｇｃｈａｏ（秦永超），ＦａｎＺｉｙｕ（范子瑜）ＪｉａｎｇＺｕ...     

Modification Behavior of Trace Rare Earth on Impurity Phases in Commercial Purity Aluminum

Modifying effect and mechanism of trace rare earth on Fe(Si)-rich impurity phases in commercial purity aluminum were studied with the aids of SEM, EDAX, TEM, etc. It is found that Ce-rich mixed rare earth (RE) is an effective modifying agent, which makes the coarse Fe-rich impurity phases transform into complex compounds of tiny, sphere/short stick form, thus improving mechanical properties of this material; its modifying mechanism is in that RE gathering in front of solid/liquid interface enters into the impurity phases, forming complex (A1FeSiRE) compounds; or is adsorbed in the impurity phases surface, impeding the growth of impurity phases; however, excessive RE will result in the increasing of RE compounds (secondary phases), and plasticity reduction of this material. Therefore, its addition amount should be less than 0.07% (mass fraction).     

Determination of Ciprofloxacin by Flow Injection Analysis Based on Chemiluminescence System

CiprofloxacinHydrochloride(CPLX),1cyclo propyl6fluoro1,4dihydro4oxo7(1piperazinyl)3carboxylicacid,isanewtypeoffluorequinolonean ti bacterialdrugs.Thiskindofdrugsexhibitshighac tivityagainstabroadvarietyofbacteria.Italsohas someadvantagesincludinghighabsorptionefficiency bytakingorally,longdecayterm,etc.CPLXiswide lyusedasalongtermeffectiveanti bioticandeasy in usereagent,andhasbeenusedforcuringmediumde greerespiratorydiseasescausedbysensitivebacteria,infectsofurinarysystemandskinorganisms.…     

Study on Monoxide Emission Spectrometry of Rare Earth Elements Ⅰ. Determination of Sm in Rare Earth Concentrate by Dual Wavelength Method

ＳｔｕｄｙｏｎＭｏｎｏｘｉｄｅＥｍｉｓｉｏｎＳｐｅｃｔｒｏｍｅｔｒｙｏｆＲａｒｅＥａｒｔｈＥｌｅｍｅｎｔｓⅠ．ＤｅｔｅｒｍｉｎａｔｉｏｎｏｆＳｍｉｎＲａｒｅＥａｒｔｈＣｏｎｃｅｎｔｒａｔｅｂｙＤｕａｌＷａｖｅｌｅｎｇｔｈＭｅｔｈｏｄＺｈａｎｇＺａｉｚ...     

Direct Determination of Trace Impurities in High Purity Neodymium after In-Situ Analyte-Matrix Separation by Fluorination Assisted ETV-ICP-AES

Highpurityrareearthproductshavebeenappliedinmanyhigh techfieldsinrecentyears .NeodymiumoxideisoneofthewidelyusedREEs ,anditisneces sarythereforetodevelopmethodsforthedeterminationofnon -REEimpuritiesinhighpurityNd2 O3[1] .Itiswellestablishedthatsampleintroductionisacriticalstepinananalyticalprocedure .Comparedwithsolutionnebulization ,directsolidintroductionschemesareveryattractiveforitsincreasingthetrans portefficiency ,abilityofsampleanalysisinsmallamounts ,andnotsufferingfromcontaminatio…     

反相流动注射分光光度法测定稀土铝合金中的稀土总量

本文以二溴—氯偶氮氯磷作显色剂,建立了反相流动注射分析测定稀土总量的方法.实验表明,本方法简便,快速,且钙、铁的允许量较手工法约提高一个数量级.方法用于稀土铝合金中的稀土总量的测定,结果满意.     

高纯稀土氧化物中钾、钠、镁、锰和锌的测定

本文采用空气─乙炔原子吸收法测定了高纯氧化镧、氧化钐、氧化镨、氧化铒和氧化钬中钾、钠、镁、锰和锌的含量，考察了基体效应及共存离子对待测元素的干扰，确定了最佳的工作条件。     

流动注射离子交换分离-分光光度法测定煤矸石中痕量钪

采用流动注射技术进行痕量钪的离子交换分离富集,在0.40 mol·L-1HBr介质中,Sc3+与Br-形成络阴离子,被离子交换树脂交换富集,用0.25mol·L-1HNO3-1.5%硫脲溶液洗脱,用对氯偶氮氯膦(CPA-pCl)分光光度法测定.有色络合物的最大吸收波长为615 nm,钪的质量浓度在0～1000μg·L-1范围内符合比耳定律,方法的检出限为1.2μg·L-1.经分离后,钪的测定灵敏度可提高数倍,大量共存离子不干扰钪的测定.该法已应用于煤矸石痕量钪的测定.