流动注射—夹层带进样方式—分光光度法测定镍

采用流动注射夹层带进样方式研究了酚红法测定溴的化学条件和流路参数，所建立的方法具有灵敏度高，精密度好，试剂消耗量少和分析速度块的特点，在所选实验条件下，Ｂｒ的质量浓度为０．２～１０．０ｍｇ／Ｌ时有良好的线性关系，检出限和相对标准偏差（２．０ｍｇ／Ｌ，Ｂｒ，ｎ＝１１）分别为０．１１ｍｇ／Ｌ和０．８８％测定速度为６０～９０／ｈ，对化学试剂ＫＣｌ和ＮａＣｌ中的杂质溴进行了测定，加标回收率为９５％～１０５     

3,5-二溴-4-偶氮变色酸苯基荧光酮与铝显色反应及应用

研究了在阳离子表面活性剂ＣＴＭＡＢ存在下，Ａｌ（Ⅲ）与３，５＿二溴＿４＿偶氮变色酸苯基荧光酮（ＤＢＡＣＰＦ）的显色反应条件和光度性质。在ｐＨ６０的ＨＡｃ＿ＮａＡｃ缓冲介质中，Ａｌ（Ⅲ）与试剂形成１∶２的红色配合物，最大吸收峰位于５６０ｎｍ处，表观摩尔吸光系数为１２５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ａｌ（Ⅲ）的质量浓度为０～０２ｍｇ／Ｌ时符合比尔定律。拟定方法用于铝黄铜及石灰石样品中铝的测定，结果与标准值相符。     

环境水中化学需氧量的反向流动注射分析法研究

研究了Ｃｅ（ＳＯ４）２Ｈ２ＳＯ４体系反向流动注射分析法测定环境水中化学需氧量（ＣＯＤ）的试验条件。在２．５～１６０．０ｍｇ／Ｌ线性范围内,采样频率达到２５／ｈ,Ｃｌ－的质量浓度至２５００ｍｇ／Ｌ无干扰。对６０ｍｇ／Ｌ的标准试样重复测定１１次,相对标准偏差为０．７９％,检出下限为２．５ｍｇ／Ｌ。该法便于实际工作中ＣＯＤ的连续监测,用于河水、池塘水分析,获得结果与经典的重铬酸钾法相对照,相关性良好     

等离子体发射光谱法同时测定大气气溶胶中多种金属元素

建立了采用等离子体发射光谱测定大气气溶胶中金属元素的方法。气溶胶样品经密封混合酸消解处理后,直接进行Ａｌ、Ｃａ、Ｍｇ、Ｋ、Ｎａ、Ｍｎ、Ｆｅ、Ｓｒ、Ｖ和Ｚｎ１０种元素的测定,方法检出限在０２～１１μｇ／Ｌ,对于０ｘ～ｘｘｍｇ／Ｌ的样品测定６次的精密度好,ＲＳＤ＜１２％,样品加标回收率为９８６％～１０５０％。方法经国家一级标样验证可行,已用于大批大气气溶胶样品的测定。     

环境水中化学学需氧量的反向流动注射分析法研究

研究了Ｃｅ（ＳＯ４）２－Ｈ２ＳＯ４体系反向流动注射分析法测定环境水中化学需氧量的试验条件。在２．５－１６０．０ｍｇ／Ｌ线性范围内,采样率达２５／ｈ,Ｃｌ＾－的质量浓度至２５００ｍｇ／Ｌ无干扰。对６０ｍｇ／Ｌ的标准试样重复测定１１次,相对标准偏差为０．７９％,检出下限为２．５ｍｇ／Ｌ。该法便于实际工作中ＣＯＤ的连续监测,用于河水,池塘水分析,获得结果与经典的重铬酸钾法相对照,相关性良好。     

5′-硝基水杨基荧光酮与锆显色反应及其应用

在００８～０１０ｍｏｌ／ＬＨＣｌ介质中，溴化十六烷基三甲铵（ＣＴＭＡＢ）存在下，Ｚｒ（Ⅳ）与５′＿硝基水杨基荧光酮（５′＿ＮＳＦ）发生显色反应，形成１∶４的桔红色络合物，λｍａｘ＝５４０ｎｍ，ε为１４６×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ｚｒ（Ⅳ）含量在０～０５ｍｇ／Ｌ符合比尔定律。方法用于氧化铝及陶瓷釉料中锆的测定，结果与ＩＣＰ＿ＡＥＳ法相符，ＲＳＤ（ｎ＝５）在１３％～３７％。     

二安替比林基—（2—溴）苯基甲烷与铈的显色反应及应用

合成了二安替比林基＿（２＿溴）苯基甲烷（ＤＡｏＢＭ）。在Ｍｎ（Ⅱ）和吐温＿８０存在下，Ｃｅ（Ⅳ）与ＤＡｏＢＭ反应生成有色化合物，λｍａｘ为４８０ｎｍ，摩尔吸光系数为３１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。Ｃｅ（Ⅳ）的质量浓度为０００４～０２ｍｇ／Ｌ时符合比尔定律。方法已用于稀土矿石中微量Ｃｅ（Ⅳ）的测定，结果与ＩＣＰ＿ＡＥＳ法相符     

在线液 - 液萃取微型万用分相器的设计和应用 Ⅲ.流动注射液液萃取电感耦合等离子体原子发射光谱测定矿石中钼和钨

设计的在线液液萃取分相器及相应流路系统与电感耦合等离子体原子发射光谱联用具有良好的分析性能。用于测定地质样品中的Ｍｏ和Ｗ，检出限（３σ）分别为３６μｇ／Ｌ和２８μｇ／Ｌ，两元素在０～２．０ｍｇ／Ｌ有良好的线性。对于１ｍｇ／Ｌ的Ｍｏ和Ｗ的测定，ＲＳＤ（ｎ＝７）分别为４０％和２７％，测定速率为２５～３０／ｈ。     

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）。     

微分溶出计时电位法测定地质物料中微量铜

在０．２ｍｏｌ／Ｌ ＨＣｌ－１．０ｍｏｌ／ＬＮａＣｌ－０．１５ｍｏｌ／Ｌ抗坏血酸介质中，用电流氧化微分溶出计时电位法直接测定地质物料中微量Ｃｕ。富集电位－０．５５Ｖ，时间２０～４０ｓ；电极转速２５００ｒ／ｍｉｎ；溶出电流０．２～１μＡ；记录电位范围－０．２～－１．２０Ｖ；清洗电位－０．１０Ｖ，时间１０ｓ。方法检出限０．２μｇ／ｇ，线性范围２～４００ｎｇ／ｍｌ，精密度（ＲＳＤ，ｎ＝１１，４．１μｇ／     

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