5‘—硝基水杨基荧光酮与锆显色反应及其应用

在０．０８￣０．１０ｍｏｌ／Ｌ ＨＣｌ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１．４６×１０＾５Ｌ·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％。     

TritonX—100—5—Br—PADAP光度法测定铜和镍

研究了非离子型表面活性剂ＴｒｉｔｏｎＸ－１００存在下,用５－Ｂｒ－ＰＡＤＡＰ光度法测定铜镍的方法。结果表明：在ＰＨ９．０的硼砂缓冲介质中,５－Ｂｒ－ＰＡＤＡＰ与铜和镍生成紫红色络合物,λｍａｘ＾Ｃｕ＝５７５ｎｍ,εＣｕ＝１．０４×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１,λｍａｘ＾Ｎｉ＝５７５ｎｍ,εＮｉ＝１．１４×１０＾５Ｌ·ｍｏｌ＾－１·ｎｍ＾－１。铜和镍的质量浓度分别在０￣５６０μｇ／Ｌ和０￣５     

钪－4，5－二溴苯基荧光酮－CTMAB－吐温－60多元配合物的分光光度法研究

研究结果表明，在混合表面活性剂ＣＴＭＡＢ－吐温－６０存在下的ＰＨ５．７－６．５的缓冲介质中，Ｓｃ（Ⅲ）与４，５－二溴苯基荧光酮形成高灵敏的多元配合物，其ε５９０＝２．２６×１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１，组成比为：Ｓｃ：ＤＢＰＦ：ＣＴＭＡＢ＝１：２：４。采用混合表面活性剂使增溶增敏作用更为显著，并加速了显色反应，增强了配合物的稳定性。而Ｎａ２ＳＯ４的加入能显著地提高体系的灵敏度，Ｓｃ量在０－     

meso—四（2—磺酸萘基）卟啉与锰（Ⅱ）显色反应研究

研究了新合成的ｍｅｓｏ－四（２－磺酸萘基）卟啉（ＴＮＰＳ４）与Ｍｎ＾２＋的显色反应。在ｐＨ８．０的Ｎａ２Ｂ４Ｏ７－ＨＣｌ缓冲溶液中，ＴＮＰＳ４与Ｍｎ＾２＋形成稳定的配合物，最大吸收波长４７０ｎｍ，配合物组成为ＴＮＰＳ４：Ｍｎ＾２＋＝２：１，表观摩尔吸光系数ε＝１．０３×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，线性范围０．０－５．０μｇＭｎ＾２＋／２５ｍｌ。用于化探样品中Ｍｎ的测定，结果令人满意。     

河南元古宙爆破角砾岩型店坊金矿的黄铁矿特征及其生成条件

元古宙爆破角砾岩型店切坊金矿床中的黄铁矿是主要载金矿物,黄铁矿多为（１００）,属硫亏损型（Ｆｅ１．００００Ｓ１．８７７５－１．９８２１）Ｃｏ／Ｎｉ〉１（１．５－５．８７５）,热电系数导型为Ｎ型,δ＾３４Ｓ＝４．８‰～６．８‰,形成于温度较同（２２０～４３８℃）,氧逸度为ｌｏｇｆｏ２〈－３７×１０＾５Ｐａ硫逸度为ｌｇｆｓ２＝－３９．８５×１０＾５～－３５．６５×１０＾５Ｐａ,氧化还原条件发生变化的开     

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１．０４×１０＾５Ｌ·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     

钛—邻氯苯基荧光酮—Trutib X—100显色反应的研究及微量钛的测定

本文研究了在非离子表面活性剂Ｔｒｉｔｏｎｘ－１００存在的情况下，邻氯苯基荧光酮（Ｏ－Ｃｌ－ＰＦ）与钛的显色反应。试验表明，在０．１０～０．１４ｍｏｌ·Ｌ￣（－１）Ｈ＿２ＳＯ＿４介质中，Ｏ－Ｃｌ－ＰＦ与钛形成灵敏度极高的红紫色配合物，其最大吸收峰位于５４０ｎｍ处，表现摩尔吸光系数为１．８×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），钛含量在０～３μｇ／２５ｍｌ范围内服从比尔定律。该方法用样少，操作简便，灵敏度高，选择性好，适于测定地质样品中的微量钛。     

间硝基偶氮氯膦光度法测定分子筛中铝

研究了Ａｌ＾３＋与间硝基偶氮氯膦显色反应。在ｐＨ５．３ＨＡｃ－ＮａＡｃ缓冲溶液中,Ａｌ＾３＋与间硝基偶氮氯膦形成的络合物最大吸收位于６５６ｎｍ,表观摩尔吸光系数εｍａｘ＝１．７６×１０＾４Ｌ·ｍｏｌ＾－１·ｃｍ＾－１,Ａｌ在浓度０￣１．０μｇ／ｍｌ范围内遵守比尔定律。本方法已用于沸石分子筛中Ａｌ的分析,结果令人满意。     

新型卟啉显色剂TDMAPTPS与钯的显色反应研究

研究了新型水溶性卟啉显色剂ＴＤＭＡＰＴＰＳ与钯的显色反应，在ｐＨ为３．４～５．０缓冲溶液中，适量ＶＣ，ＯＰ，ＳＤＢＳ存在，Ｐｄ（Ⅱ）与显色剂形成１：１稳定配合物，λｍａｘ＝４１３ｎｍ，ε＝１．６５×１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ，Ｐｄ（Ⅱ）浓度在０～３．２μｇ／１０ｍＬ之间服比尔定律。该方法用于实际样品测定，结果满意。     

硅铁灰石在我国的首次发现

硅铁灰石是一种罕见的单链硅酸盐矿物，产于矿体围岩的晚期热液脉中，其晶体呈厚板状或矛头状，颗粒大小０．１ｍｍ—０．５ｍｍ，日光下呈黑色，强光源下呈浓茶绿色─棕色，玻璃光泽，条痕淡灰绿色，透明─半透明，维克显微硬度Ｈｖ１００ｇ＝３５９ｋｇ·ｍｍ－２，实测密度３．３５ｇ·ｃｍ－３，计算密度为３．３２ｇ·ｃｍ－３。偏光显微镜下显正高突起，具强多色性，Ｎｇ浅黄棕色、Ｎｐ暗绿色，二轴晶正光性，ＺＶ（＋）＝７６（１）°，折射率Ｎｇ＝１．７５９，Ｎｍ＝１．７３７，Ｎｐ＝１．７２８．Ｘ射线单晶衍射表明，硅铁灰石属三斜晶系，空间群为Ｐ１。由Ｘ射线粉晶衍射数据计算出晶胞参数ａ＝０．７４７５（１）ｎｍ，ｂ＝１．１８４４（１）ｎｍ，ｃ＝０．６６７９（１）ｎｍ，α＝９１°３４（３）′，β＝９３°４５（１）′，γ＝１０３°１９（１）′。硅铁灰石的晶体化学式为（Ｃａ２．０７１Ｎａ０．００７Ｋ０．００１）２．０７９（ＦｅＭｎＭ０．１７１）０．９９１（ＦｅＡｌＴｉ０．００２）１．０２１［（Ｓｉ４．９８９　Ａｌ０．０１１）５．０００Ｏ１４．１０１（ＯＨ）０．８９９］。硅铁灰石是酸式硅酸盐，不存在与阳离子结合的ＯＨ－离子，因而在红外光谱中缺失３４     

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

正~~     

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