感耦等离子体发射光谱法测定原油中痕量铁镍铜钒

系统地试验了用感耦等离子体发射光谱同时测定原油中痕量元素Ｆｅ、Ｎｉ、Ｃｕ和Ｖ的多种前处理方法,制定出Ｈ２ＳＯ４、ＨＮＯ３分步炭化,５００℃灰化,ＨＣｌ＋ＨＮＯ３（ＶＨＣｌ∶ＶＨＮＯ３＝１∶１）溶解灰分的最佳分解方案。该方法的检出限为１．０～６．０μｇ／Ｌ,精密度好,ＲＳＤ（ｎ＝４）＜４．６％,加标回收率为９６．２％～１１１％。方法已应用于大庆、苏北、惠州等原油样品的分析。     

直流等离子体发射光谱法测定地质样品中的痕量稀土元素

报道了用国产７３２型阳离子交换树脂分离富集,ＤＣＰ－ＡＥＳ测定地质样品中Ｙ及１４种稀土元素的方法,回收率在７６．７％～１０９％之间,各元素检出限为１．２０ｎｇ／ｍＬ～３６ｎｇ／ｍＬ方法的精密度（ｎ＝６）为１．６％～４．３％经几种国家标准物质及岩石样品分析验证,结果令人满意。     

感耦等离子体质谱法测定商代原始瓷中的稀土

以混合酸溶样电感耦合等离子体质普法测定了商代古陶瓷中稀土元素,采用Ｉｎ内标补偿测定信号所受的影响,同时讨论了干扰因素及其校正方法。方法经国家一级标准物质分析验证,其分析结果与标准植吻合;经１０次重复测定同一样品,方法的精密度ＲＳＤ在１．６％～７．３％。该方法已用于不同地区的商瓷样品中稀土的测定,并对古瓷的地球化学特征作了探讨。     

偏最小二乘－分光光度法测定地质样品中铈组稀土元素的研究

采用偏最小二乘回归（ＰＬＳＲ）算法，对均三溴偶氮胂显色体系光度法同时测定地质样品中铈组稀土元素的结果进行数据处理，取得满意结果。讨论了消除样品中的钇组稀土元素干扰、校准样品群的建立以及最佳因子数的确定等问题。用所拟定方法对国家级ＧＳＤ、ＧＳＲ系列地质标样进行测定，其结果与推荐值相符。对地质样品ＮＢ３６７平行９次测定，铈组各稀土元素的ＲＳＤ在２．２％～１０．Ｏ％范围。     

感耦等离子体质谱法直接测定碳酸盐岩中超痕量稀土元素

探讨了等离子体质谱（ＩＣＰ－ＭＳ）测定碳酸盐岩痕量稀土元素效应及稀土元素间干扰,要用模拟碳酸盐岩样品中稀土元素天然组成比值的校正溶液,对稀土元素间的干扰具有明显的抑制作用,利用＾１１５Ｉｎ－＾１０３Ｒｈ双内标校正系统,有效地抑制分析信号的动态漂移,建立了碳酸盐岩中超痕量稀土元素的ＩＣＰ－ＭＳ分析方法,方法检出限为（０．１～１．２６）ｎｇ／ｇ,ＲＳＤ≤１０％（ｎ＝５）,用碳酸盐岩标准物质ＧＢＷ０７１０８和碳酸盐岩管理样分析验证,测定结果与标准值符合。     

偏最小二乘—分光光度法测定地质样品中铈组稀土元素的研究

采用偏最小二乘回归算法，对均三溴偶氮胂显色体系光度法同时测定地质样品中铈组稀土元素的结果进行数据处理，取得满意结果，讨论了消除样品中的钇组稀土干扰，校准样品群的建立以及最佳因子数的确定等问题，用所拟定方法对国家ＧＳＤ、ＧＳＲ系列地质标样进行测定，共结果与推荐值相符。对地质样吕ＮＢ３６７平行９次测定，铈组各稀土元素的ＲＳＤ的２．２％－１０．０％范围。     

微波消化在磷矿石样品制备中的应用

以微波ＨＮＯ＿３消化分解磷矿石试样，用ＩＣＰ－ＡＥＳ进行多元素同时测定。该方法经磷矿石标准样品验证后，用于云南省九个地区磷矿中Ｃａ、Ｐ、Ｆｅ、Ａｌ、Ｍｇ和Ｋ六种元素的分析，结果与经典酸分解方法制备样品的分析结果相符；同一样品平行测定９次，其各元素的相对标准偏差（ＲＳＤ）在１．５８％～４．４１％。     

阳极溶出伏安法同时测定痕量锡和镉

在ＨＣｌ－ＮＨ＿４Ｃｌ底液中，电解时间６０ｓ、电镀时间５ｓ、除氧３０ｓ的条件下，Ｓｎ和Ｃｄ有稳定的溶出峰。Ｓｎ和Ｃｄ的检出限分别为６．５μｇ／Ｌ和３．０μｇ／Ｌ，测定范围分别为１０～２００μｇ／Ｌ和５～１８０μｇ／Ｌ。对含Ｓｎ和Ｃｄ为２０μｇ／Ｌ的试液测定１０份，ＲＳＤ分别为５．６１％和４．８３％。方法用于实际样品测定，结果与文献方法相符。     

微波密闭消解-等离子体质谱法测定岩石样品中的稀土元素

建立了有微波密封ＨＦ＋ＨＮＯ３消解样品,等离子体质谱测定岩石样品中１５个稀土元素的分方法。用该方法对国内外岩石标准品进行测定,结果表明稀土元素的测定值与标准值之间的相对偏差小于５％,检出限为（０．１－０．９）＊１０＾－９,多次测定结果的相对标准偏差在１．３％－５．２％。各类实际岩石样品中稀土元素的分析结果均与地质规律相符,进一步证明了方法的可靠性。     

地质样品中痕量碘的热解——示波极谱法测定

提出了在１０００℃高温中热解地质样品,以５ｇ／Ｌ ＮａＯＨ溶液为吸收液,以１０％ＮＨ３·Ｈ２Ｏ－３６ｇ／Ｌ ＮＨ４Ｃｌ溶液－２０ｇ／Ｌ Ｎａ２Ｂ４Ｏ７·６Ｈ２Ｏ溶液－１６ｇ／Ｌ Ｎａ２ＳＯ３溶液为底液,用二阶导数示波极谱测量痕量碘。方法的检出限为０．０８μｇ／ｇ,精密度（ＲＳＤ）为５．５％。经地质标准物质验证,测定值与推荐值吻合。     

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.)     

HISTORICAL GEOLOGY & STRATIGRAPHY

正20140985Chen Liang(Post-Doctoral Research Station of Mining Engineering,School of Nuclear Resources and Nuclear Fuel Engineering,University of South China,Heng-yang 421001,China);Huang Wei Composition of Major and Correlated Elements with Organic Matters and Paleoclimatic Implication for Lower Paleogene Sediments in Sanshui Basin