异烷基磷酸（1甲基庚基）酯萃淋树脂分离感耦等离子体光谱法测定氧化铕中微量稀土元素

用５７０９萃淋树脂还原色层法分离富集高纯氧化铕中微量稀土杂质，随后用顺序扫描等离子体光电光谱法测定。色层分离的条件：上柱稀土基体的质量浓度为２０ｇ／Ｌ，ｐＨ２～３，流速为２５ｍＬ／ｍｉｎ，洗脱液为６ｍｏｌ／Ｌ的ＨＣｌ溶液。共测定铈、镨、钕、钐、钆和镝６种稀土杂质。回收率为８９％～１０５％，相对标准偏差≤４％。方法可用于荧光级氧化铕中杂质稀土的测定     

异烷基磷酸（1—甲基—庚基）酯萃淋树脂分离感耦等离子体光谱法测定…

用５７０９萃取树脂还原色层法分离富集高纯氧化铕中微量稀土杂质，随后用顺序扫描等离子体光电光谱法测定。色层分离的条件：上柱稀土基体的质量浓度为２０ｇ／Ｌ，ｐＨ２－３，流速为２．５ｍＬ／ｍｉｎ，洗脱液为６ｍｏｌ／Ｌ的ＨＣｌ溶液。共测定铈，镨，钕钐，钆和镝６种稀土杂质。     

5′-硝基水杨基荧光酮胶束增敏分光光度法测定微量钯

于ｐＨ６７～７６的磷酸盐缓冲介质中，溴化十六烷基三甲铵存在下，Ｐｄ（Ⅱ）与５′＿硝基水杨基荧光酮３０ｍｉｎ内反应完全，生成组成比１∶２的紫红色配合物。λｍａｘ＝５８２ｎｍ，Δλ＝５６ｎｍ，表观ε为１０４×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，配合物至少稳定３６ｈ。测Ｐｄ（Ⅱ）的线性范围在０～０８０ｍｇ／Ｌ。结合丁二酮肟＿氯仿萃取分离，方法可用于试样中微量钯的测定，结果与５＿Ｂｒ＿ＰＡＤＡＢ光度法一致，标准加入回收率为９３２％～１００４％，相对标准偏差为１７％（ｎ＝１０）。     

催化光度法测定痕量镍的研究

研究了在ＫＨ２ＰＯ４Ｎａ２Ｂ４Ｏ７缓冲介质中，痕量镍催化Ｈ２Ｏ２氧化胭脂红褪色的指示反应及动力学条件，测定了反应活化能，建立了动力学光度法测定痕量镍的新方法。方法检出限为２４０×１０－８ｇ／Ｌ，测定范围为００８～２４μｇ／Ｌ。结合丁二酮肟正丁醇萃取分离，实现了对铝合金标样中痕量镍的测定，ＲＳＤ（ｎ＝６）小于３％。     

在线液-液萃取微型万用分相器的设计和应用 Ⅱ.流动注射溶剂萃取分光光度法测定微量碘的分析性能

设计了一种实用的玻璃重力分相器及相应的萃取流路系统,用于在线萃取分光光度测定微量碘,萃取时ｖ水∶ｖ有机＝３０∶１,线性范围在０～３０００ｍｇ／ＬＩ－效果良好。检出限为７０μｇ／ＬＩ－,测定１ｍｇ／ＬＩ－的精密度（ＲＳＤ,ｎ＝７）为２２％,测定频率为２５／ｈ。方法用于市售海带中Ｉ－的测定,加标回收率为９８％。     

萃取色谱分离—原子发射光谱测定超高纯氧化铽和氧化镝中痕量稀土杂质

研究了２＿乙基己基膦酸单２＿乙基己酯萃取色谱分离＿原子发射光谱测定超高纯Ｔｂ４Ｏ７和Ｄｙ２Ｏ３中痕量稀土杂质，方法可用于纯度（质量分数ｗ）为９９９９９９％～９９９９９９９％Ｔｂ４Ｏ７和Ｄｙ２Ｏ３的分析。在铽和镝的样品中其它稀土杂质的回收率分别为７３％～１３３％和９５％～１２０％，６次测定平均值的相对标准偏差分别为５８％～２２％和７９％～２０％，分离周期为９ｈ和１２ｈ。     

在线液-液萃取微型万用分相器的设计和应用 Ⅰ.连续流动萃取石墨炉原子吸收测环境水中镉和不同价态的铬

计了一种用于液＿液萃取，可与各种检测器配合并适用于比重大于或小于水的有机溶剂的微型万用分相器及相应的流路系统。用于与石墨炉原子吸收分光计联用测定环境水中镉和铬，检出限分别为５８ｎｇ／Ｌ和０１７μｇ／Ｌ，精密度（ＲＳＤ，ｎ＝９）分别为５４％和６７％，加标回收率为９２％～１０８％，样品测定速率为３０／ｈ。     

三正辛胺纤维棉对金的吸附性能及其在测定金中的应用

研制了三正辛胺（ＴＯＡ）纤维棉,考察了ＴＯＡ纤维棉对Ａｕ（Ⅲ）的吸附性能,选择了吸附和解吸的最佳条件。在φ＝１０％的王水中,ＴＯＡ纤维棉可定量吸附Ａｕ（Ⅲ）,使其与多种共存离子分离。吸附的Ａｕ（Ⅲ）用１０ｇ／Ｌ的Ｎａ２ＳＯ３溶液解脱。在给定条件下,对５～２００μｇＡｕ（Ⅲ）进行分离富集,其回收率在９８０％～１０１０％。方法已用于氧化金铅矿、铅锌矿、银金矿中金的分离富集和测定,所得结果与其它方法相符,其ＲＳＤ（ｎ＝５）为１６％～３９％。     

光度法测定痕量钛的研究

基于痕量Ｔｉ（Ⅳ）在稀Ｈ２ＳＯ４介质中对ＥＤＴＡ还原Ｃｒ２Ｏ２－７褪色反应的抑制作用，建立了测定痕量Ｔｉ（Ⅳ）的光度法。测定范围为２４～２４μｇ／Ｌ，检出限为１０６×１０－７ｇ／ＬＴｉ（Ⅳ）。结合萃取分离富集技术，方法用于测定人发及茶叶样品中的痕量Ｔｉ（Ⅳ），结果与标准值相符，加标回收率在９５％～１００％，ＲＳＤ（ｎ＝６）为１１％～２０％。     

析相萃取光度法测定地质样品中痕量钯

研究了表面活性剂加醇析相对钯硫代米蚩酮络合物的萃取行为,建立了痕量钯的光度测定方法。析相对Ｐｄ的萃取回收率为９９５％,富集倍率为２５。络合物的λｍａｘ＝５３０ｎｍ,形成后至少稳定２ｈ,ε达２６×１０６Ｌ·ｍｏｌ－１·ｃｍ－１,线性范围１４～４００μｇ／ＬＰｄ（Ⅱ）,检出限是１４μｇ／Ｌ,对于１０μｇ／ＬＰｄ测定１１次,计算相对标准偏差为４４％。方法已用于岩矿中痕量钯的测定,结果与推荐值吻合。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

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