The ferronickel smelting process materials such as laterite-nickel ore calcine, dust and electric furnace slag were pretreated by oxidization for the fusion sample preparation. The calibration curves for the X-ray fluorescence spectrometry (XRF) analysis were prepared using the certified reference materials of iron ore and converter slag and the self-made standard sample of laterite-nickel ore. The rapid and accurate determination of ten components (Ni, Fe, SiO₂, MgO, CaO, P₂O₅, Al₂O₃, Cr₂O₃, MnO and Co) in ferronickel smelting process materials was realized. It was found that the mass fraction of reducing components was relative low when the sample (200-mesh, 74 μm) was oxidized in air at 900 ℃ for 45 min. Under the tested oxidization conditions, the mass fraction of elementary metals and residual carbon in laterite-nickel ore calcine, dust and electric furnace slag samples could be reduced below 0.1%, which met the requirements of platinum-gold alloy crucible in fusion sample preparation. The fusion results were good when the mixed lithium metaborate and lithium tetraborate was used as the flux, the dilution ratio was 10, and the sample was fused at 1 050 ℃ for 15 min. The matrix effect was corrected by the theoretical α coefficient method. The linear correlation coefficients of calibration curves of components were all higher than 0.999. The laterite-nickel ore and its calcine, dust and electric furnace slag were analyzed by the proposed method. The results of precision test showed that the relative standard deviations (RSD, n=9) was less than 5%. The determination results were corrected according to the loss on ignition to calculate the contents of components in sample. The found results were consistent with those obtained by chemical method.

The pressed powder pellet method was an ideal, green and environment friendly sample preparation method. It was simple and rapid. However, the determination results were greatly affected by the granularity effect, limiting the application of this method in many fields. In order to solving the influence of granularity effect on direct tabletting of sample powder, the certified reference material of phosphate ore was grinded to micron size using the ultra-high-speed planetary superfine crusher. The sample was directly prepared with the powder. Then, the content of 12 components (fluorine, phosphorus pentoxide, silicon dioxide, aluminum oxide, total ferric oxide, manganese oxide, titanium dioxide, strontium oxide, calcium oxide, manganese oxide, potassium oxide and sodium oxide) in phosphate ore was determined by the wavelength dispersive X-ray fluorescence spectrometry. The results indicated that the crushing of sample into micron size could effectively overcome the granularity effect. The found results were satisfactory. Particularly, the determination range of fluorine was improved to 10.68%. The determination results of light components such as potassium oxide and sodium oxide were also good. The calibration curve was drawn by the certified reference material of phosphate ores and the artificially prepared standard materials. The root mean square (RMS) of components were between 0.001 1 and 0.53. The absorption-enhancing effect among components was corrected by the empirical coefficient and Compton scattering internal standard method. The detection limits of method were between 3 μg/g and 282 μg/g. The precision test was conducted using two national standard samples of phosphate ore. The relative standard deviations (RSD, n=10) were between 0.17% and 5.2%. The accuracy test was conducted by the mixed standard samples prepared using the certified reference materials. The found results were consistent with the reference values.

The sample was prepared by the fusion method. The mixed flux (m_Li2B4O7∶m_LiBO2=67∶33) was used to prepare the sample tablet in platinum-gold crucible. The ammonium nitrate was added as the oxidizing agent to avoid the loss of arsenic in fusion process. The results showed that the optimal conditions were as follows: the dilution ratio was 1∶13, and the melting temperature was 950 ℃. The high-purity reagent of vanadium pentoxide was used as matrix. The certified reference material was added to prepare the fusion tablet for the drawing of calibration curves of vanadium pentoxide, iron, phosphorus, silicon, arsenic, potassium oxide and sodium oxide as major and minor components. The determination method of major and minor components in vanadium pentoxide by X-ray fluorescence spectrometry (XRF) was established. The results indicated that the detection limit of minor components including iron, phosphorus, silicon, arsenic, potassium oxide and sodium oxide was 200, 100, 100, 100, 100 and 100 μg/g, respectively. The relative standard deviations (RSD) were less than 0.2%. The actual vanadium pentoxide sample was analyzed, and the found results were in good agreement with those obtained by the industrial standard method at present.

现代波长色散X射线光谱仪是对元素分析的一种无破坏性的、对环境无污染的分析方法.可对固体、粒末、液态样品中铍至铀间各元素进行定性、半定量及定量测定.

介绍了XRF法测定硅酸盐材料中八个主成分(SiO_2、Al_2O_3、C_2O、MgO、TFe_2O_3、P_2O_5、K_2O和MnO)。为准确扣除烧失量对测定硅酸盐材料中主成分的影响,使用PW1600X-射线荧光光谱仪提供的XR—60软件程序,以DJ模型和实验α系数校正基体影响。此法快速、准确,并可获得高精度的分析数据。

在钢铁和复杂合金的X荧光光谱定量分析中,分析样品往往是一些不能直接测量的丝、细棒、小零件或机床切屑等异常形态,需先经高频重熔,制成适合于上机测量的样片.本文通过一组不锈钢样品的实验,介绍用PV8920型高频熔样炉在制备X荧光分析钢铁样品时的应用,并分析和研究实验数据,从而得出各种原始形状样品经重熔处理后各元素变化情况的一些初步结论.

The single oxide fusion fine powders were prepared with high-purity oxides using lithium tetraborate and lithium carbonate as flux. The fine powders with different masses were mixed and fused to synthesize the artificial standard samples of hard alloy with different elemental contents. The calibration curves were prepared. The matrix effect was corrected with empirical coefficient method. The analysis method of cobalt, nickel, iron, niobium, tantalum, chromium and tungsten in tungsten-cobalt or tungsten-nickel tungsten-based hard alloys by X-ray fluorescence spectrometry (XRF) without certified standard samples was established. The linear range of calibration curve of elements was wide. The correlation coefficients were all higher than 0.998. The precision test was conducted on the artificially prepared standard samples with the relative standard deviation (RSD) of less than 0.5%. The determination precision of hard alloy samples was investigated and the results were good. The accuracy test indicated that the determination results were consistent with those obtained by GB/T 26050-2010 and chemical method. The proposed method solved the problems of lack of certified reference materials of hard alloy.

核电设备用钢(中低合金钢)中含钴量不得超过0.02％,要求测定钢中残钴。本文介绍使用3530多道X射线荧光光谱仪测定钢中的残钴。 3530仪器是固定通道荧光仪,由于我们无钴的通道,因此通过扫描道来进行。 我们利用“通道操作”中操作程序和记录仪,选择钴的分析线,绘制分析线强度分布图,和校正扫描道的2θ角。实验时发现Co小于0.01％时,标准分析点离散,线性差,无法获得良好的检量线,分析残钴有困难。检量线线性差的原因可能由于背景所致,于是

The content of lead-zinc ore was analyzed using the hand-held X-ray fluorescence spectrometer. The rapid analysis method of lead, zinc, copper and molybdenum in lead-zinc ore on site was established. According to the energy position of testing elements, the optimal voltage of 35 kV was selected. The determination results of Al, Ti and Ni filter leafs were compared. The detection limit of Mo could be effectively reduced using Ni filter leaf and 4 mm collimator. The direct detection without sample preparation was adopted to meet the analysis requirements of actual samples on site. The surface state of various samples was calibrated by the mathematical model, realizing the quantitative analysis of block, crumb and powdered samples on site. The proposed method was applied to the determination of Pb, Zn, Cu and Mo in standard samples and actual samples. The found results were consistent with the certified values or other methods. The accuracy deviation could meet the requirements of mineral separation. The proposed method exhibited good repeatability and short determination period. It had been applied to some domestic large lead-zinc mining bases.

The sample was prepared by fusion method using lithium tetraborate-lithium carbonate as flux and ammonium iodide as releasing agent. The analysis method of silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, manganese oxide, vanadium pentoxide, chromium oxide, phosphorus, titanium dioxide and total iron in vanadium slag, vanadium slag clinker and vanadium tailings by X-ray fluorescence spectrometry(XRF) was established. The results showed that the sample fusion results were best under the following conditions: the sample mass was 0.25 g; the dilution ratio (m_Sample∶m_Flux) was 1∶20; the dosage of release agent was 20 mg. The empirical coefficient method was used for the correction of matrix effect and the spectral overlapping interference. The relative standard deviation (RSD, n=10) of components in vanadium slag samples was between 0.10% and 1.9%. The detection limits were between 35 μg/g and 460 μg/g. The proposed method was verified using the certified reference materials and actual samples. The found results were consistent with the certified values and those of actual samples obtained by wet method. The proposed method could meet the requirements of routine analysis.

Copper powder, as the conductive medium, was mixed evenly with lanthanum oxide powder and tableted. Then the contents of some impurity elements in high purity lanthanum oxide powder were determined by direct current glow discharge mass spectrometry (dc-GDMS). The glow discharge conditions like the discharge current, the discharge gas flow rate and the ion source temperature as well as the tableting conditions including the mixing ratio of the two powders and the tableting machine pressure were investigated in terms of their impact on the discharge stability and the sensitivity in order to optimize the experimental conditions. Meanwhile, the total signal of La, O and Cu was normalized and then the content of impurity elements in high purity lanthanum oxide powder were obtained by subtraction. Copper powder was considered a reagent blank, and determined for eleven times to obtain the detection limit for analyte elements in the range of 0.005-0.34 μg/g. The high purity lanthanum oxide powder sample was determined independently for six times. The results were consistent with those obtained by inductively coupled plasma mass spectrometry, and the relative standard deviations (RSD, n=6) were less than 20%.

The application status for gas analysis of inorganic solid materials, including metal alloys, rare earth materials, metallurgical additives and refractory ceramic, was reviewed by inert gas fusion-infrared absorption or thermal conductivity method. The main analytical conditions, such as sample mass, flux, analytical power and certified reference materials, were specially summarized, and the latest progress on the determination of partial hydrogen, oxygen and nitrogen was introduced. At last, the demerits of these two methods were discussed, and the related suggestions were proposed. Simultaneously, the application prospect and development of gas analysis in inorganic solid materials were forecasted.

The certified reference materials of soil, stream sediment, rock, iron ore and bauxite were prepared by fusion method for the fitting of calibration curve. The rapid analysis method for the simultaneous determination of major and minor components (SiO₂, Al₂O₃, Fe₂O₃, TiO₂, K₂O, Na₂O, CaO, MgO, P₂O₅ and MnO) in silicate and bauxite by X-ray fluorescence spectrometry(XRF) was established. The fusion conditions of samples were obtained as follows: the sample was uniformly mixed with lithium tetraborate-lithium metaborate (mass ratio of 67∶33) with the dilution ratio of 1∶10; then, 2 mL of 500 g/L NH₄NO₃ solution and 0.5 mL of 300 g/L NH₄Br solution were added; the sample was pre-oxidized at 700 ℃ followed by fusion at 1 100 ℃. The proposed method solved the following problems: each ore sample required one set of analysis method; the geological samples with various types could not be determined simultaneously. The components in certified reference material of bauxite (GBW07178 and GBW07179) were determined by proposed method. The relative standard deviation (RSD, n=12) was less than 5%. The relative error (RE) was less than 10%. The proposed method was also applied to the determination of silicate and bauxite samples, and the found results were consistent with those obtained by wet method.

标准加入法是一种消除干扰的方法.但干扰成份对测定的影响不一,可以使原来的分析参数—浓度关系从F=m_0C变成F=mC,F=m_0C+b或更复杂的情况(折线、弧线等),只有在某种情况下,使用标准加入法才是合理的.本文从理论上进行了探讨.在使用标准加入法时,应审慎判断其适用性.

微波消解是近年来兴起的一种样品前处理手段 ,具有速度快、试剂用量少、样品不易被沾污、节约能源等优点 ,目前已在生物、地质、冶金、煤炭、医药、食品等领域内 ,得到了广泛地应用 ,本文根据消解样品类型的不同 ,近年来 ,对微波消解在上述方面的应用加以归纳 ,共引用文献 74篇。

The concentration change of Fe3+ to Fe2+ in the preparation process of Fe3O4 from iron mud was determined by cyclic voltammetry (CV), which provided a simple and rapid monitoring method for this technological process. Under the experimental conditions, the Fe3+ and Fe2+ in solution formed reversible redox system, generating a pair of redox peak in good shape. The factors influencing the peak current were investigated, including the scanning rate, pH and interference ions. The results showed that the scanning rate in the range of 0.002-0.01 V/s and pH in the range of 1.5-2.5 had no influence on the oxidation peak current and reduction peak current. SO42- in the solution basically had no interference with the system under experimental conditions. The relationship was linear for Fe3+ in the range of 0.000 8-0.008 4 mol/L with correlation coefficient of 0.999 9. The relative standard deviation (RSD, n=7) was 0.70 %-2.0 %. The proposed method was compared with standard potassium dichromate titrimetry with a relative error of 1.7 %.

综述了近年来国内外测定镍基合金中化学元素分析方法的研究进展。从原子发射光谱法、原子吸收光谱法、分光光度法、原子荧光光谱法、X-射线荧光光谱法、红外吸收光谱法、质谱法、电分析化学法和化学分析法等9个方面介绍了目前有关镍基合金材料中化学元素分析方法的基本特点和应用实例,比较了各种方法的优缺点和适用范围。提出了镍基合金中化学元素分析方法的发展方向:从化学法及单一的元素分析到仪器分析及多元素同时分析。

综述了近10年来国内外对金属中碳含量的测定方法、所用的仪器及样品处理等方面的进展。文中共查阅文献118篇。

不详

综述了近年来原子吸收光谱法在重金属元素铅、镉分析中的应用进展。从样品预处理、分离富集、测定方法等方面进行了归纳和评述,对未来发展趋势进行了展望:以提高方法的选择性,简化样品前处理过程,选择简便、快速的分离富集技术为发展方向,同时随着原子吸收光谱技术的提高以及与一些分离富集系统联用技术的不断成熟和进步,将拓展原子吸收光谱法在测定不同种类样品中铅、镉元素的应用研究。

In order to realize the comprehensive utilization of cobalt resource, a review was introduced on the recovery method of cobalt from the cobalt converter slag and its research progress and application. During the smelting, most cobalt was chemically dissolved in the converter slag.On the basis of its dissolved and present status in converter slag, the flotation, pyrometallurgy, wet separation, extraction, bioleaching separation and recovery methods were introduced. The advantage and limit of various separation and recovery methods were also discussed. Among them, both the solvent extraction which is characterized by high selectivity, high recovery rate, simple flow, continuous operation and easy to realize automation, and the microbial leaching which is characterized by smallest pollution, low cost and high efficiency have promising application future.

石墨烯纳米片通过酸处理制备羧基化纳米石墨烯,将羧基化石墨烯修饰在玻碳电极表面制得石墨烯修饰玻碳电极,以此电极作工作电极,建立了微分脉冲溶出伏安法同时测定痕量铅和镉的电化学分析法。在0.1 mol/L pH 4.5的NaAc-HAc缓冲液中,在-1.2 V富集400 s后,溶出峰电流分别与Cd2+和Pb2+的浓度在2×10-9~2×10-7mol/L的范围内呈良好的线性关系,检测限分别为2×10-10mol/L和2×10-11mol/L。实验结果表明,玻碳电极被羧基化石墨烯修饰后检测灵敏度显著地提高。该法已用于实际水样中痕量镉和铅的测定,回收率在95%~109%之间。

非水滴定法可定量测定季铵盐N2 6 3浓度 ,预处理对测定结果有显著影响。适当量的碱可以将叔胺盐转化成游离胺 ,但过多的碱会产生较多的季铵碱 ,使测定结果偏低。预处理使N2 6 3中含有一定水 ,如果分析季铵盐纯度 ,预处理时还需要除去其中的水分

Indium,as a scattered rare metal,was widely used in many hightech fields with its unique and excellent physical and chemical properties. It was very difficult to separate indium due to its similarity to the main mine metals in terms of chemical properties,so the separation and enrichment methods for indium has been investigated largely at home and abroad. In this paper,the traditional and new separation and enrichment methods were introduced and compared. The emphasis lies in review of new separation and enrichment methods,as follows: liquid membrane method, chelating resin method,levextrel resin method,solvent microcapsule method and flotation method. The prospect of separation and enrichment techniques for indium was discussed.

Based on precipitation reaction of barium and sulfate radical, rhodizonic acid disodium salt was discolored by excess barium, the method ofdetermining sulfate radical by barium chloride titration withrhodizonic acid disodium salt test paper as indicator has been established. The filter paper was dipped in rhodizonic acid disodium salt mixing solution,rhodizonic acid disodium salt test paper can be used as the external indicator for the determination of sulfate radical. The effect of test paper production, acidity and coexisting ion influence were discussed and investigated. The result shows that：the filter paper will be dipped in rhodizonic acid disodium salt solution, sodium acetate solution will be joined together to soak , and then test paper will be separated from each other at 110 ℃ or so in the dark, which can be dried rapidly. The dried test paper has better performance in coloring, the stability has been improved notably. In the medium of pH 4-6,test paper discolored sensitively and responsed rapidly, the determination will not be interfered by the most common ions . This method was used in the water sample analysis,compared with gravimetric method, the measured value was consistent , and the relative standard deviation (RSD, n=7) of the method were between 0.30%-0.42%.

The condensation compound after phosphoric acid dehydration had strong acidity and coordination properties. After the samples were dissolved in phosphoric acid by heating at high temperature for 5 min, the titanium and iron was reduced by aluminum sheet and stannous chloride under acid conditions. Then, the content of titanium and iron in ilmenite was respectively  determined by potassium dichromate standard solution with neutral red and sodium diphenylamine sulfonate as indicator. The effect of sample dissolution condition, sample size, dissolution time and reducing acidity on determination was investigated to obtain the optimal experimental conditions. The determination results of titanium and iron in actual sample by this method were consistent with those obtained by classical ammonium ferric sulfatemercury salt method, and relative standard deviations (n=5) was  smaller  than 0.2 % and 0.5 %. This method has been applied into the determination of titanium and iron in ilmenite certified reference materials YSBC1970476 for five times. The results were consistent with the certified values, and relative standard deviations were 0.12 % and 0.62 %, respectively.

The status of standard analysis methods in various regions and industries was introduced in the view of more than 160 standard analysis methods at home and abroad including Chinese National Standards, China Nonferrous Metals Industry Standards, China Aeronautical Department Standards, China Entry-exit Inspection Industry Standards, ISO International Standards,Japanese Standards, European Standards, and American Society Testing and Materials (ASTM) Standards. Combined with the methods in literatures (journal articles), the application status and research progress of wet chemical analysis methods, modern instrumental analysis methods as well as sample preparation and pretreatment in analysis of more than 50 elements in aluminum and aluminum alloys were further reviewed. The basic characteristics, determination scope and application examples of ultraviolet-visible spectrophotometry, titrimetry, gravimetry, electrochemical method, spark discharge atomic emission spectrometry, X-ray fluorescence spectrometry, atomic absorption spectrometry, inductively coupled plasma atomic emission spectrometry, mass spectrometry, infrared absorption method and thermal conductivity method were reviewed emphatically. There were total 74 references.

介绍了金属中氢的存在状态及其对材料的影响。总结了近年来金属中氢的检测方法及目前实验室常用的测氢设备以及分析方法。除常规取样、实验室检测方法外,由于工艺的要求,在线检测手段发展越来越快。钢液、铝液中氢的在线测量技术越来越多地应用到实际生产中,并已经研制出可在线同时检测钢液中氧、氮、氢3种气体元素的检测设备。熔敷金属中氢的检测已经逐渐由热导法替代了传统的水银法和甘油法。

对A类和B类不确定度评定的概念、合成标准不确定度的评定方法、温度对溶液体积的影响等几个容易混淆和在评定中要注意的问题进一步讨论,提出一些新的认识,有助于对测量不确定度评定概念的理解,并对评定中的具体问题作出正确、合理的判断。

Welding flux, such as fused flux, agglomerated flux, bonded flux, electrode coating and flux-cored powder, play an important role in the fusion welding of steels and nickel-based alloys. They have been widely used in the engineering fields, including shipbuilding, nuclear power, energy, metallurgy, chemical industry, and machinery industry. A systematic review of status and development of standard system for chemical analysis of welding flux in China, especially the application status of standard methods for chemical analysis, was summarized based on the inspection requirements of sulfur, phosphorus and fluorine in the welding flux, from the perspective of standard sources (national standards, industry standards, local standards, group standards, enterprise standards, society recommended methods), testing technology (preparation and sampling, wet analysis, solid spectral analysis, combustion method, pyrolysis method, moisture test) and reference materials. At last, some suggestions for the future development were proposed to improve the standardization system for chemical analysis of welding flux, and change the hysteresis in applicable targets, testing item and scope as well as testing efficiency.

电磁悬浮熔炼技术是一种无容器材料处理加工技术,具有无容器壁污染、熔体均匀、加热熔化速度快以及表面气液相平衡速度快等优点。本文结合业以报道的电磁悬浮技术,概要叙述了近几十年来电磁悬浮技术发展概况,简要阐述了电磁悬浮基本原理,讨论了悬浮线圈的结构设计,对悬浮中的关键问题进行了分析,总结了近年来电磁悬浮技术在金属中气体分析的应用,并展望了电磁悬浮技术的应用前景及发展趋势。

研究并提供了用差减法测定氧化氢氧化钴中二价钴占总钴元素含量的具体实验方法。实验发现:样品溶解步骤是整个分析过程中的关键,样品溶解时的酸度,样品量以及实验温度等对分析结果有较大影响。该方法所用试剂简单,操作简便,准确度高,结果可靠。标准偏差≤1.4%(n=6),相对标准偏差≤7.5%(n=6)。

The ion optical system of inductively coupled plasma quadrupole mass spectrometry (ICP QMS) was briefly introduced. The ion optical systems of ICP QMS from main instrument manufacturers (such as Agilent, PerkinElmer, Thermo Fisher and Varian) were induced,which could be classified into three types including photon stop, off axis and 90 degree deflection. The present situation and advance in different types of ion optical system were reviewed in detail.

The representative and accuracy of inclusion analysis are two significant issues in characterizing non-metallic inclusions in low alloy steel. In this paper, a synthetical characterization method is proposed: Firstly, the target inclusions to be characterized are defined according to different products and technology; then, the target inclusions are analyzed synthetical through one or more appropriate characterization methods; lastly, the amount and size distribution of inclusions per unit area or volume could be calculated out with the number and size of inclusion particles within a particular field. Practical application example indicates that, through the synthetical characterization of target inclusions from the aspects of morphology, chemical composition, precipitation manner, quantity and size distribution, etc, the relationship between the characterization results and the improvement of products property & technology could be discovered and the characterization properties of the target inclusions could be determined, which provides effective support for the research and development of products and technology.

评述了近 2 0年来ICP AES分析技术的发展及其在冶金分析中的应用。内容包括 :ICP AES的发展历程、ICP AES分析方法的特性、ICP AES仪器的发展、在冶金分析中的应用现状、发展趋势。文中引用文献 6 2篇。

一种新的硫酸亚铁铵-果糖混合还原剂用于钼蓝光度法测定磷。在0.6 mol/LH2SO4介质中,硫酸亚铁铵-果糖将磷钼杂多酸还原成杂多蓝,其最大吸收波长为824 nm,表观摩尔吸光系数为2.56×104L.mol-1.cm-1,PO34-质量浓度在0~2.4 mg/L范围内符合比尔定律。除砷和硅外,水样中共存元素对测定没有干扰;加入1 mL 50 g/L酒石酸钾钠溶液可分别消除0.01 mg As(,Si(干扰。方法用于环境水样中无机磷的测定,结果满意。

In this paper, the application of X-ray fluorescence spectrometer in the analysis of rare earth in recent twenty years was reviewed. The X-ray fluorescence spectrometric analysis methods of rare earth elements were summarized in environment, mineral, rare earth enrichment, simple rare earth compound, rare earth metal, alloy, rare earth functional materials and process analysis. The detection methods were related to many fields such as steel & iron, non-ferrous metal, petrochemical industry, geology, biology and electronic material. The application of X-ray fluorescence spectrometry in rare earth industry was prospected.

不详

探讨了锂离子电池的正极材料LiCoO2中Li,Co及Co2+的定量分析方法。用原子吸收分光光度法测定Li,Co比;Li,Co工作曲线回归方程分别为A=0.10845C-0.00057,A=0.02179C-0.00070,相关系数分别为0.99994和0.99993;Li,Co回收率为97%~104%。用络合滴定法测定了样品中Co总量;用氧化还原滴定法测定了Co3+含量。用络合滴定法测定高纯Co2O3中Co含量,得到相对误差为-0.37%,RSD=0.25%。样品中Co2+的含量用样品中Co的总量减去Co

Because of its merits of rapid analytical speed, high sensitivity and high accuracy, gas chromatography-mass spectrometry is used more and more widely in element speciation analysis. In this study, the interface design methods of GC-MS were briefly reviewed. Moreover, the existing forms and speciation analysis significance of arsenic, selenium, mercury and lead were introduced, and the application of GC-MS in speciation analysis of arsenic, selenium, mercury and lead were reviewed. Finally, the development tendency and limitation of this combined technology was prospected.