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基体分离
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  matrix separation
     Determination of Impurities in Osmium Powder by ICP AES Using Matrix Separation
     基体分离ICP-AES法测定金属锇粉中的杂质元素
短句来源
     Determination of Ultra-trace Rare Earth Elements in Barite by ICP-MS after Matrix Separation
     基体分离-电感耦合等离子体质谱测定重晶石中超痕量稀土元素
短句来源
     By this technique, the volume of eluting solutions is less than 2mL, and the matrix separation efficiency is higher than 95%; the purpose to set a simple, economical and high efficiency separation method is fulfilled.
     该分离技术的应用,使元素洗脱液体积小于2mL,基体分离效率大于95%,达到了简便、经济、高效的目的;
短句来源
     This paper studies the determination of Fe,Cu,Cr and V in sodium antimonate hydrate simultaneously by ICP AES. Sodium antimonate hydrate is pretreated with matrix separation technique. The spectral interference among elements is corrected by interference factor method and the testing result is satisfactory.
     本文采用基体分离法,将锑酸钠经氢溴酸处理,加热挥发除锑,在5%盐酸介质中用ICP-AES同时测定锑酸钠中杂质元素Fe、Cu、Cr和V,并运用干扰系数法扣除元素间光谱干扰引起的分析偏差,回收率在93%—101%之间,结果较为满意。
短句来源
     The emphasis is made on the interface between separation technique and ICP-MS as well as the main types of the liquid chromatography. Some methods of sample pretreatment are elucidated. In addition, the problems related to the speciation analysis by HPLC-ICP-MS, such as the sample introducing systems, the matrix separation and the speciation analysis of qualitative identification and quantification are briefly discussed.
     介绍了高效液相色谱与电感耦合等离子体质谱 (HPLC ICP MS)联用技术在环境、材料和生命科学样品的元素形态分析中的研究进展 ,着重介绍该联用方法的接口技术及几种与ICP MS联用的主要色谱类型 ,阐述了几种样品预处理方法 ,并对样品引入系统、复杂基体分离和元素形态定量和结构分析等联用技术在元素形态分析中所面临的问题进行讨论
短句来源
  separation of matrix
     SEPARATION OF MATRIX AND DETERMINATION OF TRACE COMPONENTS IN HIGH PURE ZINC BY ICP-MS
     锌基体分离及纯锌中杂质成分的ICP-MS测定
短句来源
     SEPARATION OF MATRIX AND DETERMINATION OF TRACE COMPONENTS IN HIGH PURE BISMUTH BY ICP-MS
     铋基体分离及纯铋中杂质成分的ICP-MS测定
短句来源
     Separation of matrix and determination of trace components in high pure cadium samples by ICP-MS
     镉基体分离及纯镉中杂质成分的ICP-MS法测定
短句来源
     The sample was dissolved by acid, without separation of matrix or any other sample pretreatment.
     仅用样品混合酸溶解 ,未进行基体分离或其他样品前处理。
短句来源
  “基体分离”译为未确定词的双语例句
     The self-made CL P350 was used as extracting-washing resin,the impurity elements except Cd(Ⅱ) were washed out by 3 mol/L HCl 1 mol/L HBr as flow phase,and then Cd(Ⅱ) was washed out by NH3 NH4Br buffer(pH =9) ,the impurity elements were separated from indium base and determind by ICP-MS.
     采用自制CL-P350萃淋树脂,用3mol/LHCl-1mol/LHBr作流动相,洗脱除Cd(Ⅱ)以外杂质元素,继而用0.5mol/LNH3-NH4Br缓冲液(pH=9)洗脱Cd(Ⅱ),实现基体分离,杂质元素在同一溶液中得以在ICP-MS仪中测定。
短句来源
     The sample is converted to UO 2(NO 3) 2 with HNO 3 and the Zr is separated from matrix element uranium by TTA/xylene in 4 mol/L HNO 3. Then Zr is back extracted by 8 mol/L HNO 3 after lowering the concentration 10 times of organic phase and is determined by ICP MS directly after lowering the concentration of aqueous phase 10 times again.
     样品转化为硝酸铀酰后 ,先采用TTA/二甲苯在 4mol/LHNO3 条件下萃取 ,使Zr与铀基体分离 ,然后将有机相稀释 10倍后用 8mol/LHNO3 反萃 ,反萃液再稀释 10倍后直接用ICP MS法测量。
短句来源
     Cadmium was isolated as hydroxide precipitate and collected on the surface of the C_(18) microcolumn or the inner surface of the PTFE-KR.
     以NaOH为沉淀剂,在线生成的沉淀吸附在C18表面或PTFE-KR内表面而与基体分离
短句来源
     Determination of impurity elements in electrolytic copper by ICP-AES after separating matrix
     基体分离ICP-AES法测定电解铜中杂质元素
短句来源
     The separation method of Eu2O3 matrix is given. The sample Eu2O3 is reduced by zinc powder and RE3+ is separated from Eu2+ by high pressure ion-exchange chromatograph. The trace impurities of Ce ,Nd ,Sm ,Dy ,Er and Yb in high pure sample Eu2O3 is measured by isotope dilution mass spectrometry (IDMS).
     将样品基体分离,分别提取轻稀土和重稀土,优选参测同位素,采用同位素稀释质谱法(IDMS)对高纯Eu_2O_3样品中的Ce、Nd、Sm、Dy、Er和Yb等6种微量杂质进行定值。
短句来源
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  matrix separation
Simultaneous determination of seven impurities in high-purity cobalt oxide by ICP-AES after matrix separation using 1-nitroso-2-
      
The sample preparation requires different expense: In the first method a direct determination without matrix separation is accomplished, in the second the protein matrix is precipitated by nitric acid.
      
For the XFA determination of yttrium in steels and Cr/Ni-alloys two procedures for matrix separation are described.
      
When using a high resolution monochromator with a well adopted evaluation method, the direct determination of 27 trace elements in pure tungsten can be performed by sequential ICP-AES without matrix separation or enrichment operations.
      
The elements Mn, Ni and Pb could additionally be determined after iron-(only necessary for whole blood) and salt-matrix separation.
      
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  separation of matrix
The method can be applied to the separation of matrix elements which are strongly sorbed on anion exchangers, e.g.
      
Because of an unfavourable concentration ratio in samples of a NdFeB permanent magnet alloy, a preliminary separation of matrix elements from rare earth elements by ion chromatography is necessary.
      
Total reflection X-ray fluorescence (TXRF) analysis after the separation of matrix element was studied for the determination of trace impurity elements (Ca, Sc, V, Cr, Mn, Fe, Co, Ni and Zn) in high purity copper.
      
Normal rat bone maturation has been studied using biochemical methods and hydrazine separation of matrix and mineral for X-ray diffraction.
      
Separation of matrix alloy and reinforcement from aluminum metal matrix composites scrap by salt flux addition
      
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A method for simultaneous determination of 15 trace impurities in high-purity copper and high purity lead by inductively coupled Plasma atomic emission Spectrometry after constant current electrolytic removal of the matrix was developed in this paper.The efficiency of the separation of the matrix is more than 99.9%. The recovery of standard addition of 15 trace impurities is 87—106%. The advantages of this method are less subjected to interferences, better accuracy, rapid and simple.

本文提出用恒电流电解技术分离除去基体,JCP AES法同时测定高纯铜和高纯铅中的15种痕量杂质。方法对于基体的分离效率达99.9%以上,痕量杂质的标准加料回收率在87—106%之间。本法具有干扰小、准确度高、分析速度快、操作简便等优点。

A new chemical separation-ICP-AES method for the determination of 14 rare earth impurities in highly pure Lu_2O_3 was established. The R E. impurities were separated from the matrix and concentrated by extraction chromatographic method in which a new extractant di(l-methyl heptyl) phosphoric acid (P215) was used as the stationary phase. R. E. were then determined by ICP-AES. All the R. E. impurities are eluted first with 200 ml of 1.5 N HNO, solution and the matrix Lu is then eluted with 120 ml of 1.5N HNO,...

A new chemical separation-ICP-AES method for the determination of 14 rare earth impurities in highly pure Lu_2O_3 was established. The R E. impurities were separated from the matrix and concentrated by extraction chromatographic method in which a new extractant di(l-methyl heptyl) phosphoric acid (P215) was used as the stationary phase. R. E. were then determined by ICP-AES. All the R. E. impurities are eluted first with 200 ml of 1.5 N HNO, solution and the matrix Lu is then eluted with 120 ml of 1.5N HNO, solution. The eluent acidity is lower than that of any other extractam known Satis factory recovery and precision are obtained This method can be applied to determine trace amounts of R. E. in Lu_2O_3 with a purity of 99.99% to 99.999%.

建立了一个化学分离-电感耦合等离子发射光谱(ICP-AES)测定高纯氧化镥中14个稀土杂质的新方法。稀土杂质是用二(1-甲基庚基)磷酸(简称P215)-HNO_3反相萃取色层法使之与基体分离。选用1.5NHNO_3为淋洗液。文中还讨论了基体的负载量、温度和流速对分离的影响,以及基体残留量对杂质光谱测定的影响等。方法的精密度及准确度符合光谱测定要求,适于99.9~99.999%的Lu_3O_3中14个稀土杂质的测定。

A method for the determination of Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Fe, Mg, Mn, Mo, Ni, P, Pb, Ru, Sb, Sn, Sr, Ti, V.W and Zn 25 trace elements in U3O8 is reported. The sample is dissolved in HNO3 or HNO3-HC1O4-HF and the uranium is separated by TBP Le-vextrel resin chromatogyaphy. The impurity elements containing in the aquaous phase are determined by horizontal ICP-AES method. With a sample of 300 mg, the detection limit for all the 25 elements is in the range of 0.01? ppm, the recovery is in the range of...

A method for the determination of Al, As, Ba, Be, Bi, Ca, Cd, Co, Cr, Fe, Mg, Mn, Mo, Ni, P, Pb, Ru, Sb, Sn, Sr, Ti, V.W and Zn 25 trace elements in U3O8 is reported. The sample is dissolved in HNO3 or HNO3-HC1O4-HF and the uranium is separated by TBP Le-vextrel resin chromatogyaphy. The impurity elements containing in the aquaous phase are determined by horizontal ICP-AES method. With a sample of 300 mg, the detection limit for all the 25 elements is in the range of 0.01? ppm, the recovery is in the range of 82?121%, the determination precision (RSD) is less than ?3%.

本文叙述了用TBP萃取色层法分离后,用水平式ICP-AES法测定U_3O_8中25种杂质元素的分析方法。U_3O_8样品转化为硝酸铀酰后,采用以TBP萃淋树脂为固定相、5mol/LHNO_3为流动相的萃取色层法使杂质元素与铀基体分离,杂质流出液用水平式ICP为激发光源的发射光谱分析法直接测定。取样0.3g,所有元素的测定下限在0.04—5ppm之间。方法的重加回收率在82—121%之间。相对标准偏差在±13%以内。

 
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