二溴羟基苯基荧光酮与铁显色反应及应用

在溴化十六烷基三甲铵（ＣＴＭＡＢ）存在下，ｐＨ为７０～７４的Ｎａ２Ｂ４Ｏ７ＫＨ２ＰＯ４缓冲溶液体系中，铁与二溴羟基苯基荧光酮（ＤＢＨ＿ＰＦ）形成１∶３的络合物，其最大吸收波长为６００ｎｍ，表观摩尔吸光系数为１１５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，铁质量浓度在０～０３２ｍｇ／Ｌ符合比尔定律。该方法经硅质砂岩、石灰岩、石膏标样分析验证，结果与标准值相符，ＲＳＤ（ｎ＝５）小于３１％。     

2—（5—溴—2—吡啶偶氮）—5—二甲氨基苯胺与铂显色反应的研究及应用

研究了显色剂２（５溴２吡啶偶氮）５二甲氨基苯胺（５ＢｒＰＡＤＭＡ）与Ｐｔ（Ⅱ）的显色反应。结果表明,在乙醇存在下,１０～３２ｍｏｌ／ＬＨ３ＰＯ４介质中,试剂与Ｐｔ（Ⅱ）１５ｍｉｎ即形成稳定的紫蓝色配合物,并至少稳定２４ｈ。该配合物的最大吸收波长位于６２８ｎｍ处,表观摩尔吸光系数为８７３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１,其组成为ｎＰｔ（Ⅱ）∶ｎ５ＢｒＰＡＤＭＡ＝１∶１,Ｐｔ（Ⅱ）的质量浓度在０～１０ｍｇ／Ｌ符合比尔定律。所拟方法用于二次合金管理样及催化剂中铂的直接测定,结果与推荐值相符,精密度好,ＲＳＤ＜０．５％（ｎ＝６）。     

水杨基荧光酮与锌显色反应及应用

在ｐＨ为９５的ＮＨ４Ｃｌ＿ＮＨ３·Ｈ２Ｏ介质中，溴化十二烷基二甲基苄铵存在下，Ｚｎ（Ⅱ）与水杨基荧光酮形成１∶２的紫红色配合物，其最大吸收波长为５７０ｎｍ，表观摩尔吸光系数为８７１×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，Ｚｎ（Ⅱ）的质量浓度为０～０３６ｍｇ／Ｌ时符合比尔定律。拟定的新方法应用于矿样中微量锌的测定，结果满意     

2-[2′-(6-甲氧基-苯并噻唑)-偶氮]-1,8-二羟基萘-3,6-二磺酸的合成及其与钛的显色反应

合成了新的杂环偶氮变色酸类试剂———２［２′（６甲氧基苯并噻唑）偶氮］１,８二羟基萘３,６二磺酸,并系统探讨了在ｐＨ４．５的邻苯二甲酸氢钾ＮａＯＨ介质中显色试剂与钛的显色反应特性。结果表明,在溴化十六烷基吡啶存在下,试剂与Ｔｉ（Ⅳ）形成２∶１的络合物,显色反应１５ｍｉｎ完全并至少稳定４ｈ,最大吸收波长为６７０ｎｍ,表观摩尔吸光系数达１．６７×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,钛的质量浓度在０～４００μｇ／Ｌ时符合比尔定律。用拟定的方法测定了硅砖等标准物质中的Ｔｉ（Ⅳ）,所得结果与标准值的相对误差均小于４％,ＲＳＤ（ｎ＝５）小于３．５％。     

二溴对羧基氯磺酚光度法测定地质物料中痕量钪

在ｐＨ４的ＨＡｃＮａＡｃ介质中,钪与二溴对羧基氯磺酚发生反应,在５ｍｉｎ内完成显色,生成蓝色配合物,吸光度至少稳定２４ｈ,组成比为１∶３,λｍａｘ＝６３８ｎｍ,ε为３７４×１０４Ｌ·ｍｏｌ－１·ｃｍ－１,钪的质量浓度在０～０７２ｍｇ／Ｌ符合比尔定律。试剂对轻稀土有较好的抗干扰能力。所拟方法经国家一级标准物质中钪的测定检验,结果与标准值相符。     

二溴羟基苯基荧光酮与铜的显色反应及应用

研究了在混合表面活性剂溴化十六烷基吡啶（ＣＰＢ）及乳化剂ＯＰ存在下,二溴羟基苯基荧光酮（ＤＢＨＰＦ）与铜显色反应的条件。结果表明：在ｐＨ５．４的六次甲基四胺ＨＣｌ缓冲介质中,ＤＢＨＰＦ与铜生成紫色络合物,λｍａｘ＝５３８ｎｍ,ε５３８＝１．６５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。铜量在０～３６０μｇ／Ｌ符合比尔定律。方法经实际试样验证,结果与原结果相符。对ｗ（Ｃｕ）为０．０４４％～０．３％的样品进行测定,ＲＳＤ（ｎ＝６）为１．７１％～５．５３％。     

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％。     

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％。     

1-(2-羟基-3,5-二硝基苯基)-3-[4-(苯基偶氮)苯基]-三氮烯与铜的显色反应及应用

研究了新合成的１ － （２ － 羟基－ ３ ,５ － 二硝基苯基） － ３ － ［ ４ － （ 苯基偶氮） 苯基］ － 三氮烯（ ＨＤＮＰＡＰＴ） 试剂与铜的显色反应。在乳化剂ＯＰ存在下,ｐＨ１１ ．０ 的Ｎａ２Ｂ４ Ｏ７ － ＮａＯＨ 介质中,铜与ＨＤＮＰＡＰＴ 形成稳定的红色配合物,其组成比为１∶２ ,λｍ ａｘ ＝ ５４０ ｎ ｍ ,表观摩尔吸光系数ε５４０ ＝ １ ．７３ ×１０５ Ｌ·ｍｏｌ－ １·ｃｍ － １ ,铜的质量浓度在０ ～３６０ μｇ／ Ｌ符合比尔定律。方法应用于大米和面粉中微量铜的测定,结果与铜试剂法相符,５ 次测定的ＲＳＤ＜ ３ ％ 。     

三溴偶氮胂—锇—溴酸钾催化光度法测定微量锇

在酸性介质中Ｏｓ（Ⅳ）对ＫＢｒＯ３氧化三溴偶氮胂的褪色反应有明显的催化作用，借此反应可在水相中直接测定微量锇。方法灵敏度高，锇的质量浓度为１０～２００μｇ／Ｌ时符合比尔定律，表观摩尔吸光系数为９１８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。方法已用于贵金属精矿中锇的测定     

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.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

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).     

NONMETALS DEPOSITS

正20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.)     

MATHEMATICAL GEOLOGY

正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology,     

PROSPECTING EXPLORATION

正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.)     

STRUCTURAL GEOLOGY

正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se-     

STRUCTURAL GEOLOGY

正20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with