单一稀土元素检测方法的新近进展

本文对1999～2004年间有关单一稀土元素检测方法的研究进展进行了综述,内容包括原子吸收/原子荧光光谱法,荧光光度法,X-射线荧光光谱法,中子活化分析,电感耦合等离子体原子发射光谱法、电感耦合等离子体质谱法以及其干扰效应、进样技术和分析应用.引用文献127篇.     

8-羟基喹啉纤维分离富集-ICP-AES同时测定多种痕量稀土元素

８－羟基喹啉纤维分离富集－ＩＣＰ－ＡＥＳ同时测定多种痕量稀土元素郭伊荇,刘春明,赵晓亮,王为玲（东北师范大学测试中心,长春,１３００２４）关键词８－羟基喹啉纤维滤纸片,稀土元素,电感耦合等离子体原子发射光谱地球化学样品中稀土元素的测定主要采用离子交换...     

萃取分离电感耦合等离子体原子发射光谱法测定钢中的微量稀土元素

本文采用苯甲酰苯胲(BPHA)-甲基异丁基酮(MIBK)溶剂萃取方法将钢中基体元素Fe,Ti,Mo,V等大量非稀土元素萃入有机相中,稀土元素留于水溶液中.由电感耦合等离子体原子发射光谱(ICP-AES)仪直接测定水溶液中的微量稀土元素La,Ce,Pr,Nd.Sm,Y和Gd,实验结果与推荐值基本相符,方法的回收率为96％～108％,相对标准偏差低于5％.     

ICP-AES和ICP-MS法测定光学玻璃中的15种稀土元素

采用Na₂O₂熔融分解样品,运用电感耦合等离子体发射光谱法（ICP-AES）和电感耦合等离子体质谱法（ICP-MS）测定光学玻璃中的稀土元素。采用该方法对国家一级标准物质GBW07158、GBW07159、GBW07160和GBW07161进行测定,其结果表明与标准值相符。方法选择性好、灵敏度好、定量准确,适用于光学玻璃中稀土元素的测定,结果令人满意。     

2-乙基己基膦酸单(2-乙基己基)酯树脂色层分离电感耦合等离子体原子发射光谱法测定钢中微量稀土元素

本文采用2-乙基己基膦酸单(2-乙基己基)酯(P-507)树脂,使微量稀土元素与钢中的基体元素,铁、钛、钒和钼分离,以 3.0 mol/L盐酸溶液洗脱P-507色层柱上的稀土元素,采用电感耦合等离子体原子光谱法(ICP-AES)同时测定了钢中La、Ce、Pr、Nd、Sm、Y和 Gd 7种微量稀土元素.试样的标准加入回收率99.3％～108％;相对标准偏差小于5％.     

Trace and major element compositions of Black Sea aerosol

Instrumental neutron activation analysis (INAA), flame atomic absorption spectrometry (FAAS), flame atomic emission spectrometry (FAES), graphite furnace atomic absorption spectrometry (GF-AAS), ion chromatography (IC) and visible spectrometry (VIS) were used to determine the composition of atmospheric aerosols, collected at a rural site in the Western Black Sea Coast of Turkey. A total of 354 daily aerosol samples were analyzed for 46 trace and major elements and ions. Sample preparation, quality control procedures, instrumental operating conditions for INAA and source apportionment work is presented.     

Recent advances in on-line coupling of capillary electrophoresis to atomic absorption and fluorescence spectrometry for speciation analysis and studies of metal-biomolecule interactions

Speciation information is vital for the understanding of the toxicity, mobility and bioavailability of elements in environmental or biological samples. Hyphenating high resolving power of separation techniques and element-selective detectors provides powerful tools for studying speciation of trace elements in environmental and biological systems. During the last five years several novel hybrid techniques based on capillary electrophoresis (CE) and atomic spectrometry have been developed for speciation analysis and metal-biomolecule interaction study in our laboratory. These techniques include CE on-line coupled with atomic fluorescence spectrometry (AFS), chip-CE on-line coupled with AFS, CE on-line coupled with flame heated quartz furnace atomic absorption spectrometry (FHF-AAS), and CE on-line coupled with electrothermal atomic absorption spectrometry (ETAAS). The necessity for the development of these techniques, their interface design, and applications in speciation analysis and metal-biomolecule interaction study are reviewed. The advantages and limitations of the developed hybrid techniques are critically discussed, and further development is also prospected.     

Determination of trace elements in lithium niobate crystals by solid sampling and solution-based spectrometry methods

Solid sampling (SS) graphite furnace atomic absorption spectrometry (GFAAS) and solution-based (SB) methods of GFAAS, flame atomic absorption spectrometry (FAAS), inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS) were elaborated and/or optimized for the determination of Cr, Fe and Mn trace elements used as dopants in lithium niobate optical crystals.     

藏药材铁棒锤的微量元素含量分析

目的研究藏药材铁棒锤的微量元素含量。方法使用电感耦合等离子体质谱仪(ICPMS)测定藏药材铁棒锤药材中As、Hg、Pb、Cd含量,使用原子吸收光谱仪(火焰法、石墨炉法)测定药材中Zn、Mn、Cr、Fe、Ca、K、Cu元素的含量并进行分析。结果铁棒锤中有害元素As、Hg、Pb、Cd含量较低,Cu、Fe等有益元素含量较高。结论藏药材铁棒锤有丰富的微量元素,具有较高的开发利用价值。     

Application of Ion Chromatography,Nuclear and Spectrochemical Techniques for Trace and Major Element Determination in Seaside Aerosols

Instrumental neutron activation analysis, flame atomic absorption spectrometry, flame atomic emission spectrometry, graphite furnace atomic absorption spectrometry, ion chromatography and visible spectrometry were applied to determine the compositions of atmospheric aerosols, which were collected at a rural site in the Western Black Sea Coast of Turkey. A total of 354 daily aerosol samples were analyzed for about 46 trace and major elements and ions. Sample preparation, quality control procedures, and instrumental operating conditions were reported. Most of the elements measured commonly by the above techniques have very large correlation coefficients and low intercept values indicating the agreement between the results.     

AES法和AAS法测定食品、药物中微量元素的进展

综述了80年代以来原子发射光谱（AES）法和原子吸收光谱（AAS）法在食品和药物中微量元素分析的应用进展，内容包括，样品的预处理和进样技术，ICP-AES法和其他AES法。FAAS法，GFAAS法，HG-AAS法和冷蒸气AAS法等方面的应用及发展状况。     

豫产桔梗的土壤与药材中部分微量元素含量与分析

为了解桔梗中微量元素含量特征,研究土壤中微量元素对桔梗药材道地性的影响,采用原子吸收光谱法、冷原子荧光法、双道原子荧光法对不同产地的桔梗药材及生境土壤中8种微量元素含量进行了测定,所得数据用SPSS 11.0软件进行分析比较。结果表明,不同产地的桔梗微量元素含量有差异;药材与土壤中微量元素之间具有相关性。桔梗对土壤中微量元素是主动与被动相结合的有选择吸收。     

Determination of Rare Earth Elements in Natural Water Samples by Rapid Sequential High-Resolution Continuum Source Flame Atomic Absorption Spectrometry (HR CS FAAS) and inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

A method was developed to sequentially assay ten rare earth elements by high-resolution continuum source flame atomic absorption spectrometry. The rare earth elements Nd, Sm, Eu, Tb, Ho, Er, Tm, Yb, Y, and Sc were assayed in environmental water samples which were also analyzed by a reference inductively coupled plasma-mass spectrometry protocol. The samples did not require pretreatment or preconcentration. Interferences for the method were evaluated. Experimental parameters, including the flame composition, burner height, ionization buffers and number of pixels, were optimized. The volume necessary to run measurements in triplicate was only 15?mL per sample. The accuracy, precision and linear range were evaluated. The limits of detection ranged from 0.003 to 0.473?µg mL^?1 for the most sensitive (Yb) to the least sensitive (Tb) element.     

Derivative flame atomic absorption spectrometry and its application in trace analysis

Flame atomic absorption spectrometry (FAAS) is an accepted and widely used method for the determination of trace elements in a great variety of samples. But its sensitivity doesn’t meet the demands of trace and ultra-trace analysis for some samples. The derivative signal processing technique, with a very high capability for enhancing sensitivity, was developed for FAAS. The signal models of conventional FAAS are described. The equations of derivative signals are established for FAAS, flow injection atomic absorption spectrometry (FI-FAAS) and atom trapping flame atomic absorption spectrometry (AT-FAAS). The principle and performance of the derivative atomic absorption spectrometry are evaluated. The derivative technique based on determination of variation rate of signal intensity with time (dI/dt) is different from the derivative spectrophotometry (DS) based on determination of variation rate of signal intensity with wavelength (dI/dλ). Derivative flame atomic absorption spectrometry (DFAAS) has higher sensitivity, lower detection limits and better accuracy. It has been applied to the direct determination of trace elements without preconcentration. If the derivative technique was combined with several preconcentration techniques, the sensitivity would be enhanced further for ultra-trace analysis with good linearity. The applications of DFAAS are reviewed for trace element analysis in biological, pharmaceutical, environmental and food samples.     

电感耦合等离子体发射光谱法测定稀土发火合金中铁、镁、铜和锌

采用盐酸辅以加热的方式处理稀土发火合金样品,以电感耦合等离子体原子发射光谱法测定稀土发火合金中铁、镁、铜和锌含量。采用矩阵模拟实验优化分析谱线,利用多点定标校正曲线法计算测量结果。在最佳实验条件下,稀土发火合金中的基体元素对待测元素的测定结果无明显影响,各元素在检测范围内线性关系良好,相关系数均为0.999 9,方法检出限为0.001~0.010μg/m L。测定结果的相对标准偏差为1.10%~1.75%(n=11),样品加标回收率在96.00%~104.05%之间。该方法简便、快速且具有较高的灵敏度,适用于稀土发火合金中铁、镁、铜、锌等非稀土元素的测定。     

Cloud point extraction utilizable for separation and preconcentration of (ultra)trace elements in biological fluids before their determination by spectrometric methods: a brief review

This review summarizes and discusses applications related to the determination of (ultra)trace elements in biological fluids using cloud point extraction as sample pretreatment technique. Biological fluids, such as urine, whole blood, serum or plasma, are the most often analyzed biological materials in these applications. Spectrometric methods, such as flame atomic absorption spectrometry, electrothermal atomic absorption spectrometry, inductively coupled plasma optical emission spectrometry, and inductively coupled plasma mass spectrometry, are commonly used for quantification of elements preconcentrated by the extraction technique. Optimized extraction procedures lead to the high extraction recoveries of the target analytes. High enrichment factors achieved lead to the lowering of quantification limits. All these achievements illustrate the great potential of extractions for reliable quantification of (ultra)trace elements in complex biological matrix what is documented in this review of a number of works published on this topic.     

大黄及其不同炮制品中6种元素的含量测定

采用火焰原子吸收光谱法(FAAS)测定了大黄及其不同炮制品中6种元素的含量。结果表明,大黄不同炮制品中这些元素的含量与生品相比均有差异。     

火焰原子吸收光谱法测定茯苓中微量元素

本文确定了各微量元素火焰原子吸收光谱仪的工作条件,建立了各微量元素线性回归方程.应用火焰原子吸收光谱法测定了天然茯苓和液体发酵茯苓中微量元素含量.研究结果表明二者微量元素含量存在一定的差异,探讨了产生上述差异的原因.     

蒙药伊赫－汤－25中金属元素的原子光谱分析

用原子发射光谱法定性测定了蒙药伊赫－汤－２５中含有的金属元素，并用火焰原子吸收光谱法定量测定了该药中九种金属元素的含量。为将来进一步探讨该药中金属元素（特别是微量元素）与其药效的关系以及准确检验此种药物提供了实验数据。     

药用龙牙百合中微量元素含量测定

采用原子吸收法和原子荧光法测定了隆回药用龙牙百合中的微量元素,结果表明隆回药用龙牙百合含有丰富的微量元素铜、锌、镁、钙等,为进一步利用和综合开发药用龙牙百合提供了参考。