重铬酸钾法测定废水COD条件改进的研究

本提出用ＣｕＳＯ４作催化剂，在Ｈ２ＳＯ４－Ｈ２ＰＯ４溶液中，重铬酸钾回流测定废水ＣＯＤ的方法，实验表明，最佳测定条件为：ＣｕＳＯ４浓度为７×１０＾－２ｍｏｌ．Ｌ＾－１（混酸溶液）：Ｈ２ＳＯ４：Ｈ３ＰＯ４＝５：１（体积比）回流时间２ｈ，通过与标准方法对比，测定结果满意，本方法的优点是：不需用贵重金试剂Ａｇ２ＳＯ４，改用ＣｕＳＯ４作催化剂，精密度高，准确性好，具有一定的实用价值。     

复合固体超强酸催化合成醋酸正丁酯的研究

研究了以复合型固体超强酸为催化剂率合成醋酸正丁酯,探讨了酯化反应条件和催化剂的制作工艺对酯产生率的影响,实验结果表明,复合型固体超强酸（ＳＯ＾２－４／ＺｒＯ２－Ａｌ２Ｏ３）具有较高的催化活性和选择性,在最佳工艺条件下醌产率可达９６％,产品质量符合国标要求,该工艺操作简便,条件易控制,对环境无污染。     

流动CO2—H2O系统中方解石溶解动力学机制：扩散边界层效应和CO2转？…

利用旋转盘实验装置和高分子生物催化剂技术,笔者研究了流动ＣＯ２－Ｈ２Ｏ系统中方解石溶解动力学及其控制机制。实验发现,方解石的溶解既受到固－液界面间扩散边界层（ＤＢＬ）的控制,还受到扩散边界层内ＣＯ２慢速转换反应（ＣＯ２＋Ｈ２Ｏ←→Ｈ＾＋＋ＨＣＯ＾）的控制。然而,高ＣＯ２分压（Ｐｃｏ２〉０．０１ａｔｍ）时,溶解主要为ＣＯ２慢速转换控制,而低ＣＯ２分压（Ｐｃｏ２〈０．０１ａｔｍ）时,溶解主要为扩散为边     

生油岩矿物低温催化脂肪酸脱羧生烃的活性评价

在地质低温条件下,未熟生油岩矿物催化脂肪酸脱羧生烃反应生成的ＣＯ２含量很低,因此,通过金属镍催化剂将ＣＯ２转化为ＣＨ４后再用氢离子火焰检测器检测其含量,以提高检测的灵敏度。运用该方法评价了我国七个油田未熟生油岩矿物催化脂肪酸脱羧生烃活性实验结果表明,脂肪酸在未熟生油岩矿物低温催估作用下,其脱羧率与未熟生油岩矿物中的碳酸盐及过渡金属Ｆｅ元素的含量有关。     

胜利油田火山岩辉石中岩浆包裹体成分及有关成因问题

对胜利油田火山岩中辉石及其中岩浆包裹体成分的研究表明：ＣＯ２气藏区和非ＣＯ２气藏区新生代火山岩辉石及其中岩浆包裹体成分有明显区别,前者中辉石为普通辉石,成分相对富ＳｉＯ２,而贫Ａｌ２Ｏ３、ＴｉＯ２、ＭｇＯ和挥发成分;而后者中辉石为透辉石,成分相对贫ＳｉＯ２和挥发份,而富Ａｌ２Ｏ３、ＴｉＯ２和ＭｇＯ。前者岩浆包裹体玻相中富含ＣＯ２,包裹体中的金属子矿物多为黄铁矿;而后者岩浆包裹体玻相中贫ＣＯ２;包裹     

华南震旦纪基性火山岩的地球化学及构造环境

华南地区产于震旦纪地层中的火山岩主要见于震旦纪裂谷盆地两侧的边缘,湖南新化和广东高思火山岩为其中的二个发育地区,镜下鉴定为玄武岩系。在ＳｉＯ２－Ｋ２Ｏ＋Ｎａ２Ｏ的分类图中主要为玄武岩类,有一样品为碧玄岩类,含有较多石英杏仁体玻璃质火山岩角砾的样品为玄武质安山岩类。在ＦｅＯ＊－Ｎａ２Ｏ＋Ｋ２Ｏ－ＭｇＯ三角图中所有样品均为拉斑质岩系。样品的重元素丰度模式具大陆－初始裂谷－Ｅ－ＭＯＲＢ拉斑玄武岩的过渡特征,在Ｎｂ、Ｚｒ、Ｙ、Ｔｉ图上属板内环境。在ＴｉＯ２－Ｋ２Ｏ－Ｐ２Ｏ５三角图上显示以大洋环境为主、大陆环境为次。湖南新化拉斑玄武岩的Ｓｍ、Ｎｄ同位素特征反映岩浆来源于亏损的地幔,并受到了老基底的污染。     

P507萃取色层分离ICP—AES法测定高纯氧化镱中14种稀土杂质元素

本文采用Ｐ５０７萃取树脂－盐酸体系色谱法对高纯氧化镱中１４种稀土杂质元素进行分离、富集,用ＩＣＰ－ＡＥＳ法测定其稀土元素含量。当上柱量为２００ｍｇＹｂ２Ｏ３时,所能达到的测定下限：Ｅｕ２Ｏ３为１μｇｇ－１;Ｙ２Ｏ３,Ｇｄ２Ｏ３,Ｄｙ２Ｏ３,Ｈｏ２Ｏ３,Ｔｍ２Ｏ３,Ｌｕ２Ｏ３为２μｇｇ－１;Ｌａ２Ｏ３,Ｅｒ２Ｏ３为４μｇｇ－１;Ｐｒ６Ｏ１１,Ｎｄ２Ｏ３,Ｓｍ２Ｏ３,Ｔｂ４Ｏ７为８μｇｇ－１;ＣｅＯ２为１６μｇｇ－１。５次取样分离,加入试验回收率在８８％—１１２％之间,相对标准偏差＜１０％。本方法可适用于纯度为９９．９５％—９９．９９％的氧化镱中１４种稀土杂质元素的测定。     

β－Sialons粉料的合成实验

用高岭土为基本原料，加入活性碳及Ｆｅ（ＮＯ３）３·９Ｈ２Ｏ催化剂压制成混合物小圆饼，在氮气（Ｎ２）氛中经碳热还原氮化反应合成β－Ｓｉａｌｏｎｓ粉料。实验结果经Ｘ射线物相分析法测定反应生成物的物相组成及其相对含量，分析研究混合原样中碳与高岭土的比例、保温湿度和保温时间等实验因素对合成产物组分的影响。研究结果表明，实验参数原样中碳含量、保温温度和保温时间彼此关联，它们与产物中物相的关系十分复杂，直接影响着生成物中的物相及其相对含量的变化。本文仅就实验工艺参数对合成产物的影响进行初步探讨。     

贵州银厂坡银矿床蚀变过程中组分迁移特征

银厂坡银矿床碳酸盐化蚀变作用与银的矿化富集在空间上紧密相伴,这种蚀变作用导致矿石与围岩中组分有明显差异。本文通过定量计算阐明组分之间的迁移方向;计算表明在银的原生富集过程中,常量组分的带入与带出最不明显;而微量组分Ａｇ和Ｃｕ、Ｐｂ、Ｚｎ、Ａｓ、Ｓｂ、Ｃｄ、Ｇｅ带入围岩明显。在银的次生富集过程表现为Ａｇ和Ｃｕ、Ｐｂ、Ｃｄ、Ｇａ、Ｇｅ、ＲＥＥ、ＡｌＯ３、Ｆｅ２Ｏ３、ＭｎＯ、Ｋ２Ｏ、Ｐ２Ｏ５的强烈带入,以Ａｌ２Ｏ３、Ｆｅ２Ｏ３、Ｋ２Ｏ、Ｐ２Ｏ５带入强度最大,这是由于ＣａＯ、ＭｇＯ被淋滤,体积亏损造成强烈带入的假象,而Ａｓ、Ｓｂ、Ｚｎ、Ｖ、Ｃｒ、Ｃｏ、Ｎｉ、ＣａＯ、ＭｇＯ为自围岩中带出组分,以ＣａＯ、ＭｇＯ带出强度最大。ＲＥＥ除原生富集的弱蚀变白岩→矿化白云岩表现为带出外,其余原富集过程均表现为带入围岩。造成组分发生迁     

山东沂水峨山口韧性剪切带糜棱岩类质量平衡分析

峨山口韧性剪切带糜棱岩质量分析结果表明,该剪切带是在一个开放体系非等化学背景下形成的。该带中物质组分的迁移活动,主要发生在白云母石英片岩的形成阶段,并以Ｌｏｓ（流体）、ＳｉＯ２、ＦｅＯ、Ｆｅ２Ｏ３、ＴｉＯ２、Ｋ２Ｏ大量带入,而Ｎａ２Ｏ显著带出为特征。以Ａｌ２Ｏ３守恒为限制条件,整个剪切带从原岩到白云母石英片岩的质量和体积增大约５０％。     

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).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861     

ENGINEERING GEOLOGY

正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.)