渤中地区不同热解实验条件下的烃源岩生烃动力学研究

为了对比不同类型烃源岩样品在不同的热解模拟实验条件下生油和生气的活化能，选取渤中地区多个湖相泥质烃源岩原岩和干酪根样品进行了开放体系无水热解和封闭体系加水热解实验，烃源岩样品取自不同的洼陷和烃源层位，具有不同的有机质丰度、类型和成熟度。对比结果表明，有机质类型和成熟度对烃源岩生油活化能有重要影响，平均生油活化能随有机质类型变差和成熟度增大而增大。不同的洼陷、烃源层位和样品类型对平均生油活化能无明显影响，而样品类型则影响活化能的分布，原岩活化能分布相比干酪根更加集中。处于成熟阶段烃源岩的生气活化能比处于低熟阶段烃源岩的生油活化能高11~17 kJ/mol。相对于开放体系无水热解实验，封闭体系加水热解实验活化能分布集中且能够包含初次裂解和二次裂解过程。本研究应用封闭体系加水热解模拟实验，分别选择低熟烃源岩原岩样品和成熟烃源岩干酪根样品进行生油和生气活化能研究，取得了良好的效果。      

氢化物-无色散原子荧光光谱法测定微量碲

氢化物—无色散原子荧光光谱法测定黄铁矿及地球化学样品中微量碲，采用硝酸，盐酸，高氯酸分解样品，用浓盐酸将六价碲还原成四价碲，再用硼氢化钾继续还原使碲形成氢化物ＴｅＨ２，在ＡＦＳ１２０１Ｃ原子荧光光谱仪进行测定碲的检示限为０．１８μｇ／ｇ，精密度ＲＳＤ％为６．８％，该方法操作简便、快速、准确、费用低，可应用于大批量地球化学样品的分析。     

Sephadex G-25用于YML-1脱盐条件优化

凝胶过滤（或称分子筛）层析是一种由限制分子通过多孔基质，按分子大小分离混合分子的技术。凝胶过滤方法常用于生物样品脱盐，其操作简便易行，脱盐效果可靠。由于可通过紫外和电导检测器监控整个层析过程、产品的纯度和回收率，又可连续自动进样和收集样品，自动化程度高，容易放大，所以，自上世纪60年代初始，随着层析介质技术的发展，Sephadex G-25系列凝胶过滤介质常用于实验室乃至工业规模的脱盐、小分子物质去除及缓冲液的置换。一般实验室脱盐常用透析方法，但其耗费时间长、缓冲液消耗量大，又易损失宝贵样品。笔者采用凝胶过滤法研究了YML-1（本实验室提取的一种海洋生物活性物质）脱盐的实验条件及效果。     

酸溶二苯碳酰二肼分光光度法测定水系沉积物样品中微量铬

采用王水分解样品，分光光度法测定水系沉积物样品中微量铬，方法简便，易操作，成本低。通过对比，测定结果的肛≤10％，RSD≤5％(n=12)与标准值吻合。     

我省国家出资地质勘查项目样品实验测试管理办法出台

经黑龙江省国土资源厅发布的《黑龙江省国家出资地质勘查项目样品实验测试管理办法》（以下简称《办法》）自6月16日开始实施。至此，全省国家出资地质勘查项目样品实验测试工作步入规范轨道，为找大矿、找好矿，实现找矿突破奠定了基础。     

全自动凯氏定氮仪测定土壤全氮含量

氮是土壤多目标地球化学调查中规定定量分析的54种指标中的必测元素,多目标地球化学调查样品分析的显著特点是样品数量多。文章在采用全自动凯氏定氮仪测定土壤中全氮含量的基础上,开展了对仪器条件优化、方法准确度方面的试验研究。通过优化实验条件,能快速、准确地测定土壤中的全氮含量。此方法操作简便、数据可靠、分析效率高、试剂量少,适于大规模分析土壤氮含量。     

苏里格西区苏４８区块盒８段储层微观孔隙结构及对渗流能力的影响

为了清晰地认识苏里格气田苏４８区块盒８段储层的微观孔隙结构特征，研究其对渗流能力 的 影 响，在 铸 体 薄 片、扫 描电镜观察分析基础上选取相应样品进行了高压压汞、核磁共振及相渗实验的测试分析。结 果 表 明:盒８段 储 层 包 括４类 孔 隙 结构，每类储层对应的储集空间都有一定的差异，且储渗性能逐一变差；此外，孔喉特征参数与可动流体饱和度及束缚水饱和度有较强的相关关系，说明微观孔隙结构对储层的渗流能力有一定的控制作用；岩心样品ｂ和ｃ均属于Ⅲ类，岩心样品ｃ孔喉比（３１８．４）小于岩心样品ｂ（３３２），岩心样品ｂ喉道半径（０．５μｍ）小于ｃ（０．７９μｍ），岩心样品ｂ孔喉体积比（０．２５）小于ｃ（０．６），岩心样品ｂ可动流体饱和度（１５．６％）小于ｃ（２３．６９％），说明当孔隙半径及孔喉分选相近时，喉道是影响可动流体饱和度的关键要素。      

测量鱼鲜度的三甲胺MIS结构的敏感性与机理

以ＴｉＯ２为材料制作的Ａｌ／ＴｉＯ２／Ｓｉ　ＭＩＳ结构对与鱼鲜度有关的三甲胺气体有良好的响应。实验表明：当三甲胺体积分数从０～１０３×１０－６变化时，在１ＭＨ的测试频率下，样品的电容值改变了２５０％；在３Ｖ的偏压下，电流变化了４５０％。鲜鱼死后在２５ｈ内，在较高温度下样品的（Ｃ－ｔ）和（Ｉ－ｔ）关系响应敏感。并通过分析ＴｉＯ２膜各组分的介电常数，解释了样品的电容随体积分数变化的机理。提出了吸附模型，鉴于化学吸附产生的正电荷对界面势垒和电场的影响，结合Ｆｏｗｌｅｒ－Ｎｏｒｈｅｉｍ（Ｆ－Ｎ）隧道穿透机构对电流一体积分数（Ｉ—Ｄ）关系进行解释。     

水中硫酸盐测定方法研究

对EDTA容量法测定水中硫酸根时，对加入沉淀剂后样品静置时间对测定结果的影响进行了研究。结果表明，在本法规定的浓度范围内，样品静置时间对测定结果无影响。     

化探土壤样品省去研磨流程的研究

根据生产实践，采用不同的实验研究方法，论证了主要成晕元素在天然介质的粗细颗粒土壤中的分布、浓度、赋存状态及异常特征等都是基本相同的。因此，野外采集的较细颗粒的土壤样品不需再进行研磨，可直接进行过筛分析，既不影响找矿效果，又节约了时间和费用。     

Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.     

Phylogenetic analysis of cultivable bacteria isolated from Arctic sea-ice

Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter.     

Foreword

正Rapid changes of Arctic sea ice cover have been in the focus of the international climate research community in recent years.Quite a few of nations have completed a large number of related surveys and research projects in the Arctic Ocean.Up to now,China has performed six research cruises to the Arctic Ocean resulting in a significant volume of research output.Improved knowledge on the atmospheree-sea ice-ocean interactions in the Arctic is a     

Exposure ages and radiogenic ages of ureilite(GRV 024516) and ordinary chondrite(GRV 024517) from Antarctica

The GRV 024516 and GRV 024517 meteorite samples collected from Grove Montains,Antactica are ureilite and H5 ordinary chondrite,respectively.Based on the study of mineralogy-petrology,the cosmic-ray exposure ages and gas retention ages of these two meteorites were determinated and calculated.Their cosmic-ray exposure ages are 33.3 Ma,51.7 Ma,and gas retention ages are 1936.8 Ma and 3720 Ma,respectively.The ureilite contains diamond,graphite and amorphous C,which are mainly carrier of noble gases indicating obviously shock metamorphism effects,which induced 40Ar partial loss.The H5 chondrite indicates thermal metamorphism of parent body,its gas retention age fall the range between 3220 Ma and 4510 Ma of the least shocked H5 chondrites     

Information for authors

正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied     

Advances in Polar Science CONTENTS(Volume 25,2014)

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Guide to Authors： Journal of Mountain Science

<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet.     

Journal of Mountain Science(JMS)

<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by