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1.
方金东 《地质实验室》1997,13(3):166-167,207
研究了氢化生物发生ICP-AES法测定碳酸盐岩石样品中痕量As、Sb和Bi的各种条件,一了分析方法,分析了2个碳酸盐岩石一级标准物质其结果与推荐值一级,取样0.5g时,As、Sb、Bi方法的检出限分别为:0.03、0.024、0.13μg/g。  相似文献   

2.
在0.002%溴化十四烷基三甲铵(TTMAB)-20%HCI体系中,Sn有一灵敏的吸附波,峰电位在-0.47V(vs.Ag/AgCl),线性范围2~1000ng/ml。体系可用于岩石、土壤样品中微量Sn测定;机理研究表明,溴化一四烷基三甲铵通过诱导吸附SnCl提高测定的灵敏度。  相似文献   

3.
在0.002%溴化十四烷基三甲胺(TTMAB)-20%HCl体系中,Sn有一灵敏的吸附波,峰电位在-0、47V(vs.Ag/AgCl),线性范围2~1000ng/ml。体系可用于岩石、土壤样品中微量Sn测定;机理研究表明,溴化十四烷基三甲铵通过诱导吸附SnCl^2-4提高测定的灵敏度。  相似文献   

4.
张勤  孙晓玲 《岩矿测试》1996,15(3):183-187
经萃取分离富集后,在pH2.6的苯二甲酸氢钾HCl介质中,用电流氧化溶出计时电位法测定地质物料中痕量In。方法检出限为0.01μg/g,标样中In的含量为0.10μg/g时的方法精密度(RSD,n=11)为8.76%,加标回收率为98%~105%。应用此方法测定了国家一级地球化学标准参考物质(GSR1~6,GSS1~8,GSD9~12)中的痕量In,获得了较为满意的测定结果  相似文献   

5.
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  
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   

6.
汤志勇  敖愫 《岩矿测试》1998,17(4):285-289
建立了一个碱性体系在线氢化物发生原子荧光光谱法测定铜矿石中痕量砷、锑、铋的分析方法。设计了在线氢化物发生流路及操作程序。选择了碱性体系氢化物发生的各项最佳条件,避免了Cu、Fe等大量基体元素的干扰。方法检出限为As0.6μg/L,Sb0.4μg/L,Bi0.9μg/L,As、Sb、Bi的工作曲线均在0~400μg/L内呈良好的线性,经铜矿石国家一级标准物质分析验证,砷锑铋的测定结果与标准值吻合,相对标准偏差(RSD,n=5)在4.2%~8.8%。  相似文献   

7.
晚震旦世时,在扬子板块东南大陆边缘地带发育一套层状硅质岩建造,岩石化学成分纯净,SiO2含量在90%以上,其它化学成分含量均很低。但Fe和Mn相对富集,而Al,Ti,Mg相对贫乏。微量元素含量变化大,大部分微量元素含量相对地壳克拉克值偏低,仅U,As,Sb,Ag,Ba等富集。岩石的δ^30Si为0.0‰~0.7‰,δ^18O为20.2‰~23.6‰,δ^30Si和δ^18O值及岩石的形成温度清楚地  相似文献   

8.
研究了共沉淀分离富集贵金属元素的条件,选定在pH1.5溶液中,Mn作捕集剂,NaBH4为还原剂,使Ru(Ⅵ)、Rh(Ⅲ)、Pt(Ⅳ)、Pd(Ⅱ)、Ir(Ⅳ)和Au(Ⅲ)贵金属离子还原成金属态沉淀物,沉淀经体积分数为50%的王水溶解后用ICP-MS测定。样品测定限Rh、Ir、Au为1ng/g,Ru、Pt、Pd为2ng/g。方法的RSD(n=10)为10%~25%,经几种岩石标样验证,其结果与标准值相符。  相似文献   

9.
使用JY70P 电感耦合等离子体发射光谱仪,分别考察了一些主要基体对待测元素的各种干扰。综合各种干扰因素,采用干扰系数校正法消除综合干扰,拟定了适用于包括碳酸盐岩石的区域化探样品中19 个元素的电感耦合等离子体原子发射光谱同时测定方法。19 个元素的测定限在0 .20 ~8 .0 μg/g 。对碳酸盐岩石国家一级标准物质GBW07108 进行检测,各元素的结果与标准值吻合,相对标准偏差(n = 11) 在1 .2 % ~5 .3 % 。  相似文献   

10.
催化还原褪色光度法测定痕量锡   总被引:7,自引:1,他引:6  
周之荣 《岩矿测试》1998,17(4):279-281
痕量锡在0.04mol/LH3PO4介质中对NaH2PO2还原罗丹明B褪色反应有催化作用,催化程度与Sn量、温度和加热时间线性相关。基于此,建立了痕量锡的动力学光度分析方法。方法检出限为0.034μg/L,线性范围为0~20μg/L,结合磷酸三丁酯色谱分离,实现了地质样品中痕量Sn的测定。方法经国家地质标准物质分析验证,结果与标准值相符。对于w(Sn)为10-6水平的试样其RSD(n=6)<6.5%。  相似文献   

11.
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.  相似文献   

12.
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.  相似文献   

13.
PALEONTOLOGY     
正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.)  相似文献   

14.
正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.)  相似文献   

15.
正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.)  相似文献   

16.
PETROLOGY     
正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus.,  相似文献   

17.
正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an  相似文献   

18.
正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of  相似文献   

19.
正20140582 Fang Xisheng(Key Lab.of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);Shi Xuefa Mineralogy of Surface Sediment in the Eastern Area off the Ryukyu Islands and Its Geological Significance(Marine Geology Quaternary Geology,ISSN0256-1492,CN37  相似文献   

20.
正20141810 Bian Yumei(Geological Environmental Monitoring Center of Liaoning Province,Shenyang 110032,China);Zhang Jing Zoning Haicheng,Liaoning Province,by GeoHazard Risk and Geo-Hazard Assessment(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(3),2013,p.5-9,2 illus.,tables,refs.)  相似文献   

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