ICP-AES法测定金属硅中硼磷铝锰钙镁铁等28种微量和痕量元素     

乔爱香  江冶  李如燕 《江苏地质》2021,45(4):450-454

采用ICP-AES法对金属硅中的B、P、Al、Mn、Ca、Mg、Fe等28种微量和痕量元素进行分析。根据元素的化学性质制定预处理方法,优化ICP-AES光谱仪测试样品的最佳工作条件。在缺少金属硅标准物质的情况下,选择硅含量较高的国家一级岩石标准物质（GBW07106）进行试验,该标准物质的回收率在95.0%～104.4%之间,相对标准偏差RSD在0.21%～4.01%之间。实际分析工作表明,该方法准确、快速,符合DZ/T 0130—2006的要求。  相似文献   

南海高钙沉积物中18种常微量元素的ICP-AES测定方法研究     

王湘芹  陈志华  任红  孙琼 《海洋科学进展》2007,25(2):220-225

在利用ICP-AES分析南海高钙沉积物中的常微量元素时,钙、镁常常干扰其它元素测试。通过采用优化仪器工作参数、扣除背景值、谱线干扰校正和基体匹配的步骤,消除了元素干扰和钙、镁基体效应,提高了方法的灵敏度和准确度。通过对南海沉积物样品的大量实验和国家一级标准样验证,建立了适宜高钙海洋沉积物元素含量的ICP-AES测试方法。该方法检出限为1.55~271μg/L,相对标准偏差RSD<4.54%(n=6)。  相似文献   

贵州织金地区稀土磷块岩矿床中稀土元素赋存状态   总被引：10，自引：1，他引：9  

张彦斌  龚美菱  李华 《地球科学与环境学报》2007,29(4):362-368

以稀土磷块岩矿床为研究对象,采用电感耦合等离子体光谱法和质谱法研究了3个代表性样品的基本化学组成,分析了40多个元素的含量,确定了矿物质量分数和赋存状态,研究了稀土元素在其中的分布特征。结果表明,97%以上的稀土元素呈类质同象状态部分置换磷灰石晶格中的Ca2 存在,只有小于3%的稀土元素呈被粘土质等吸附状态或离子交换(吸附)状态存在。  相似文献   

顺序扫描ICP—AES法测定海洋沉积物中九种主要成分   总被引：2，自引：0，他引：2  

张爱滨  金红 《海洋湖沼通报》1998,(3):24-28

用ICP—AES法测定海洋沉积物中铝、铁、钙、镁、钠、钾、钦、锰、磷等九种主要成分，方法简便，省时省力，测量精密度小于4％，可以满足海洋地球化学的要求。  相似文献   

四酸溶矿——电感偶合等离子体发射光谱法测定钼矿中的钼     

冯永明  邢应香  陈波  刘军  余兴  刘洪青 《安徽地质》2014,(1):60-62,69

为了适应地质找矿和地质大普查工作对矿样测定速度和正确度的要求,对钼矿样品中的钼的测定方法进行试验,探讨在敞开体系中用盐酸+硝酸+氢氟酸+高氯酸的四酸溶矿体系消解钼矿样品,使用电感耦合等离子发射光谱仪(ICP-AES)测定钼的方法。  相似文献   

不确定度评定及在产品符合性判定中的应用金属铟中锡的 ICP-AES 测定方法     

向德磊 《矿产与地质》2016,(3):508-511

建立了金属铟中锡的 ICP-AES 测定方法过程的数学模型,通过分析得到了对测定结果正确度影响的不确定度来源,评定了各个不确定度度分量、合成标准不确定度和扩展不确定度。并通过对标准方法的重复性、再现性等概念的讨论,说明了不确定度值在产品等级判定上的使用。  相似文献   

大试管回流消解-等离子体发射光谱／质谱法测定植物样品中多元素   总被引：2，自引：1，他引：2  

马生凤温宏利  巩爱华孙德忠 《岩矿测试》2007,26(3):183-187

采用大试管和红外加热的多孔控温消解炉的简单装置消解植物样品，电感耦合等离子体发射光谱／质谱法测定其中的主量和痕量元素，对消解温度、消解时间、消解溶剂、样品取样量等条件进行考察。用植物国家一级标准物质进行前处理及测定，验证方法的可行性，测定值与标准值基本吻合。方法不仅能同时测定B、Ba、Ca、Cd、Cu、K、Mg、Mn、Na、Ni、P、S、Zn、CoSr、Pb、Cr等元素，还适用于Hg、As挥发性元素的消解测定。方法的精密度（RSD，n=10）≤10％。  相似文献   

Flotation Separation of Trace Elements from Alkaline-Earth Matrices by Co(III) Hexamethylenedithiocarbamate before ICP-AES Determination     

Vesna Zajkova Paneva  Katarina Cundeva  Trajce Stafilov 《Geostandards and Geoanalytical Research》2007,31(1):51-60

A method for the selective separation of Ag, Cd, Cr, Cu, Ni, Pb and Zn in traces from solutions of calcite (CaCO₃), dolomite (CaMg(CO₃)₂) and gypsum (CaSO₄.2H₂O) before their determination by inductively coupled plasma-atomic emission spectrometry (ICP-AES) is presented. The expected interferences of Ca and Mg on intensities of trace analytes were removed by collecting the elements of interest with cobalt(III) hexamethylenedithiocar-bamate, Co(HMDTC)₃. The flotation of aqueous solutions (1 l) of calcite, dolomite and gypsum was performed at pH 6.0, by 1.5 mg l⁻¹ Co and 0.6 mmol l⁻¹ HMDTC⁻. To minimise the effect of the reaction between Ca/Mg, which restrains the function of the surfactant, careful selection of the most suitable foaming reagent was necessary. The accuracy of the method was established by analysing natural alkaline-earth minerals by the standard addition method as well as using the dolomite reference materials GBW 07114 and GSJ JDo-1. The ICP-AES limits of detection following flotation on different minerals were found to be 0.080 μg g⁻¹ for Cd, 0.105 μg g⁻¹ for Ag, 0.142 μg g⁻¹ for Cu, 0.195 μg g⁻¹ for Cr, 0.212 μg g⁻¹ for Ni, 0.235 μg g⁻¹ for Zn and 0.450 μg g⁻¹ for Pb.  相似文献   

GGR Critical Review of Analytical Developments in 2004–2005     

Janet M. Hergt  L. Paul Bédard  Etienne Deloule  Klaus Peter Jochum  Kathryn L. Linge  Paul J. Sylvester  Matthias Willbold  Jon D. Woodhead 《Geostandards and Geoanalytical Research》2006,30(3):141-142

In 2005 Geostandards and Geoanalytical Research embarked upon a new initiative for its readers. Key researchers in various fields of geoanalytical technique development and their application were identified and invited to provide reviews pertinent to their expertise. As noted in the first of these publications "…instead of revisiting the historical context or decades of development in each analytical technique, the goal here has been to capture a snapshot of "hot topics" across a range of fields as represented in the… literature" (Hergt et al . 2005). Rather than prepare an annual review, a decision was taken earlier this year to provide a biennial summary of progress and accomplishments, in this case for the years 2004–2005. The principal techniques employed in Earth and environmental sciences are covered here, and include laser ablation and multicollector ICP-MS, ICP-AES, thermal ionisation and secondary ion mass spectrometry, as well as neutron activation analysis, X-ray fluorescence and atomic absorption spectrometry. A comprehensive review of the development of reference materials, often essential to these techniques, is also provided. The contributions assembled serve both to keep readers informed of advances they may be unfamiliar with, but also as a means of showcasing examples of the breadth and depth of work being conducted in these fields.  相似文献   

单道扫描电感耦合等离子体发射光谱法测定地质样品中的微量稀土元素     

郭振华  张立英  杜百娟 《化工矿产地质》2003,25(1):57-60

采用Na_2O_2熔融矿样,水提取,加三乙醇胺、EGTA做掩蔽剂。经氢型阳离子交换树脂交换分离富集稀土元素,由于选择了合适的仪器条件及测定波长,有效地消除了电感耦合等离子体发射光谱法(ICP-AES)测定过程中的基体干扰和光谱干扰。应用于地质样品中的稀土元素分析,获得了满意的准确度、精密度及检出限。  相似文献