氢化物发生电感耦合等离子体原子发射光谱法测定碳酸盐岩石样品中痕…

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。     

锡－盐酸－溴化十四烷基三甲铵极谱催化波体系及其应用

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。     

锡—盐酸—溴化十四烷基三甲铵极谱催化波体系及其应用

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。     

电流氧化溶出计时电位法测定地质物料中痕量铟

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     

感耦等离子体质谱法同时测定岩石中痕量元素的研究

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。     

扬子板块东南大陆边缘上震旦统热水成因硅质岩的地球化学标志

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     

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

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％。     

硼氢化钠还原共沉淀－感耦等离子体质谱法测定岩石样品中痕量钌铑钯铱金和铂

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。     

电感耦合等离子体发射光谱法同时测定碳酸盐岩石中19个元素

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 ％ 。     

催化还原褪色光度法测定痕量锡

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％。     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

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.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

NONMETALS DEPOSITS

正20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.)     

MATHEMATICAL GEOLOGY

正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology,     

PROSPECTING EXPLORATION

正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.)     

STRUCTURAL GEOLOGY

正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se-     

STRUCTURAL GEOLOGY

正20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with     

PALEOZOOLOGY

正20141609 Chen Guiying(College of Earth Sciences,Guilin University of Technology,Guilin 541004,China);Han Nairen New Materials of Stylophora from the Upper Cambrian of the Jingxi Area,Guangxi,South China(Acta Palaeontologica Sinica,ISSN0001-6616,CN32-1188Q,52(3),2013,p.288-293,2 illus.,12 refs.)Key words:Stylophora,Guangxi     

GEOPHYSICS

正20140634 Cao Lingmin(Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Xu Yi Finite Difference Tomography of the Crustal Velocity Structure in Tengchong,Yunnan Province(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,56(4),2013,p.1159-1167,6illus.,35refs.,with English abstract)