Determination of Forty Two Major and Trace Elements in USGS and NIST SRM Glasses by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry   总被引：39，自引：0，他引：39  

Shan Gao  Xiaomin Liu  Honglin Yuan  Bodo Hattendorf  Detlef Günther  Liang Chen  Shenhong Hu 《Geostandards and Geoanalytical Research》2002,26(2):181-196

Forty two major (Na, Mg, Ti and Mn) and trace elements covering the mass range from Li to U in three USGS basalt glass reference materials BCR‐2G, BHVO‐2G and BIR‐1G were determined using laser ablation‐inductively coupled plasma‐mass spectrometry. Calibration was performed using NIST SRM 610 in conjunction with internal standardisation using Ca. Determinations were also made on NIST SRM 612 and 614 as well as NIST SRM 610 as unknown samples, and included forty five major (Al and Na) and trace elements. Relative standard deviation (RSD) of determinations was below 10% for most elements in all the glasses under investigation. Consistent exceptions were Sn and Sb in BCR‐2G, BHVO‐2G and BIR‐1G. For BCR‐2G, BHVO‐2G and BIR‐1G, clear negative correlations on a logarithmic scale exist between RSD and concentration for elements lower than 1500 μg g^‐1 with logarithmic correlation coefficients between ‐0.75 and ‐0.86. There is also a clear trend of increasing RSD with decreasing concentration from NIST SRM 610 through SRM 612 to SRM 614. These suggest that the difference in the scatter of apparent element concentrations is not due to chemical heterogeneity but reflects analytical uncertainty. It is concluded that all these glasses are, overall, homogeneous on a scale of 60 μm. Our first results on BHVO‐2G and BIR‐1G showed that they generally agreed with BHVO‐2/BHVO‐1 and BIR‐1 within 10% relative. Exceptions were Nb, Ta and Pb in BHVO‐2G, which were 14‐45% lower than reference values for BHVO‐2 and BHVO‐1. Be, Ni, Zn, Y, Zr, Nb, Sn, Sb, Gd, Tb, Er, Pb and U in BIR‐1G were also exceptions. However, of these elements, Be, Nb, Sn, Sb, Gd, Tb, Pb and U gave results that were consistent within an uncertainty of 2s between our data and BIR‐1 reference values. Results on NIST SRM 612 agreed well with published data, except for Mg and Sn. This was also true for elements with m/z 85 (Rb) in the case of NIST SRM 614. The good agreement between measured and reference values for Na and Mg in BCR‐2G, BHVO‐2G and BIR‐1G, and for Al and Na in NIST SRM 610, 612 and 614 up to concentrations of at least several weight percent (which were possible to analyse due to the dynamic range of 10⁸) indicates the suitability of this technique for major, minor and trace element determinations.  相似文献   

Determination of Platinum-Group Elements in Geological Reference Materials by High Resolution-ICP-MS after Nickel Sulfide Fire-Assay Collection and Te Co-Precipitation     

Claudia P.R. Morcelli  Ana Maria G. Figueiredo  Jacinta Enzweiler  Jorge E.S. Sarkis  Alexandre P.S. Jorge  Maurício Kakazu 《Geostandards and Geoanalytical Research》2004,28(2):305-310

Inductively coupled plasma-mass spectrometry (ICP-MS) after NiS fire assay-Te co-precipitation was employed in the determination of Ru, Rh, Pd, Os, Ir and Pt at ng g^-1 levels in six platinum-group element (PGE) geological reference materials. In general, the average of several results was in good agreement with the certified values taking into account respective uncertainties. High relative standard deviations were observed for the reference materials GPt-3 and GPt-4. Problems associated with the NiS fire assay procedure and PGE determination at the sub-10 ng g^-1 level are reviewed and discussed.  相似文献   

A Preliminary Appraisal of Seven Natural Zircon Reference Materials for In Situ Hf Isotope Determination   总被引：21，自引：1，他引：21  

Jon D. Woodhead  Janet M. Hergt 《Geostandards and Geoanalytical Research》2005,29(2):183-195

There is a growing need for new zircon reference materials for in situ Hf-isotope analysis by laser ablation-multicollector inductively coupled plasma-mass spectrometry (LA-MC-ICP-MS). In this contribution we document the results of a preliminary investigation of seven natural zircons, conducted in order to test their suitability in this regard. Solution MC-ICP-MS data on separated Lu and Hf fractions provided reference compositional data while the results of ca. 750 in situ LA-MC-ICP-MS analyses allowed assessment of potential micrometre-scale heterogeneity. On the basis of these analyses and additional relevant considerations such as availability, size and (Lu)Yb/Hf ratio, we suggest that, of the currently available zircons, Temora-2 and Mud Tank are most likely to provide robust reference materials for Hf isotope determinations both at the present time and into the future. The former has the advantage of also being well-characterised for U-Th-Pb systematics and suitable for in situ age determination, while the latter is the most readily available and is of very large grain size. Additional materials such as BR266, and 91500, although limited in supply, show more consistent Lu/Hf ratios and are thus of use in monitoring elemental fractionation during ICP-MS analysis.  相似文献   

Laser Ablation and Solution ICP-MS Determination of Rare Earth Elements in USGS BIR-1G, BHVO-2G and BCR-2G Glass Reference Materials   总被引：2，自引：0，他引：2  

Ladislav Strnad  Martin Mihaljevic  Ondrej Sebek 《Geostandards and Geoanalytical Research》2005,29(3):303-314

Data are reported for rare earth elements (REE) in three geological glass reference materials (BIR-1G, BHVO-2G and BCR-2G) using a UV (266 nm) laser ablation ICP-MS system and the classical (HF-HClO₄) acid decomposition method, followed by conventional nebulisation ICP-MS. External calibration of laser ablation analyses was performed using NIST SRM reference materials with internal standardisation using ²⁹Si and ⁴⁴Ca. Replicate analyses of reference basaltic glasses yielded an analytical precision of 1-5% (RSD) for all the elements by solution ICP-MS and 1-8% (RSD) by laser ablation ICP-MS. The relative differences between the REE concentrations measured by solution and laser ablation ICP-MS compared with the reference values were generally less than 11 % for most elements. The largest deviations occurred for La determined by solution ICP-MS in BIR-1G. The results of both solution and laser ablation ICP-MS agreed well, generally better than 7%, with the exception of La, Pr and Sm in BIR-1G. The measured REE laser ablation data for BIR-1G, BHVO-2G and BCR-2G agreed with the previously published data on these basaltic reference glasses, within a range of 0-10% for most elements. No significant influences were observed for the predicted spectral interferences on some REE isotopes in the analysis of basaltic glasses.  相似文献   

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   总被引：2，自引：10，他引：2  

李艳玲熊采华  黄慧萍陶德刚 方金东 《岩矿测试》2005,24(2):87-92

采用Na2O2、Na2CO3 碱熔重晶石,水提取,氨水沉淀稀土元素,经氢型阳离子交换树脂交换分离富集稀土元素,应用电感耦合等离子体质谱对重晶石中超痕量稀土元素进行测定,用铑作内标元素补偿基体效应和灵敏度漂移。重晶石中钡的分离效率达到99. 999%,检出限为0. 11~6. 9ng/g,相对标准偏差(RSD,n=9)≤13. 7%。  相似文献   

Biomonitoring of pollution by Cerastoderma edule from the British Isles: a Laser Ablation ICP-MS study     

G.D. Price  N.J.G. Pearce 《Marine pollution bulletin》1997,34(12):1025-1031

Shells of the common cockle Cerastoderma edule have been analysed using Laser Ablation Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) for a suite of elements (Pb, Cu, As, Zn and U). The samples of C. edule were obtained from four sites in the British Isles, two facing the Atlantic and two adjacent to the Irish Sea. The LA-ICP-MS technique, permits high resolution examination of the relationship between the concentrations of elements in the hard parts and that in the environment. This study shows that this bivalve can be used as a biomonitor of pollution. All four areas under investigation are affected by anthropogenic pollution, in particular Zn and Cu, and are characterized by short-term extreme pollution events. Furthermore, high levels of U are recorded from the cockles sampled from the sites adjacent to the Irish Sea, probably related to a combination of both natural and industrial effluents discharged into the area.  相似文献   

Laser ablation ICP-MS analyses of tree-ring profiles in pine and birch from N Norway and NW Russia – a reliable record of the pollution history of the area?     

C.-D. Garbe-Schönberg  C. Reimann  V. A. Pavlov 《Environmental Geology》1997,32(1):9-16

 Laser ablation ICP-MS analysis of tree rings provides a rapid and sensitive method for investigating element concentrations and fluctuations in trees along time profiles. Time profiles obtained from pine and birch trees from a strongly polluted area in northwest Russia and a slightly polluted area at the Norwegian-Russian border show that single trees behave rather individualistically in terms of heavy metal contents as observed in the yearly growth rings. The obtained profiles can not be linked to the pollution history of the area. No correlation between pollution levels of the soils and observed metal content in tree rings can be established. Received: 6 September 1996 / Accepted: 18 November 1996  相似文献   

感耦等离子体质谱法同时测定岩石中痕量元素的研究   总被引：3，自引：5，他引：3  

曾惠芳  戢朝玉  鲁锦英 《岩矿测试》1995,(3)

试验了含难熔组分的岩石样品的分解方法、熔剂用量，以及溶液中可溶盐量的控制和标准系列的熔剂匹配等问题；分别采用Ｒｅ、Ｒｈ和Ｉｎ作内标，解决了基体效应及其基体导致的灵敏度漂移的影响，实现了不经分离富集直接用ＩＣＰ－ＭＳ法测定岩石样品中３４个痕量元素。方法测定限０．０１～５μｇ／ｇ，ＲＳＤ（ｎ＝１０）为２．６％～１３％，已应用于地质试样分析，岩石标样分析结果与标准值相符。  相似文献   

Hydrogeochemistry of the Bicaz storage lake, East Carpathians, Romania     

《中国地球化学学报》2006,25(B08):157-158

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Development of highly sensitive analytical methods for radionuclides in marine environmental studies     

Jian ZHENG Masatoshi Yamada 《中国地球化学学报》2006,25(B08):209-209

The determination of natural and artificial radionuclides, such as Th, U and Pu isotopes, in the marine environmental studies is important and has been an active research field in the environmental analytical geochemistry. For example, uranium isotope ratios give information regarding the source of the uranium in the environment, and are important for studying its biogeochemical behavior, while thorium isotope （^230Th） and Pu isotopes are good tracers for particle scavenging process study in the ocean. Due to the extremely low concentrations of these radionuclides in the marine environment, the accurate analysis of these radionuclides is still a challenging task. In this presentation, we will present the recent development of highly sensitive analytical methods for ^230Th, ^234U, ^235U, ^238U, ^239Pu and ^240Pu and their isotope ratios （^234U/^238U, ^235U/^238U, ^240Pu/^239Pu） in radionuclides in marine environmental samples, such as seawater, sediments, settling particles, using quadrupole and sector field ICP-MS. Applications of the radionuclide analysis in the marine environmental studies, such as the radioactivity environmental monitoring,  相似文献