2－胂酸基－4－甲基苯基重氮氨基偶氮苯与镍的显色反应研究及应用

作者将新合成的显色剂２－胂酸基－４－甲基苯基重氮氨基偶氮苯用于Ｎｉ的分光光度分析。在ｐＨ１１．２的Ｎａ＿２Ｂ＿４Ｏ＿７－ＮａＯＨ缓冲介质中，非离子型表面活性剂ＯＰ存在下，试剂与Ｎｉ（Ⅱ）生成组成为２：１的稳定红色配合物，其最大吸收波长位于５３８ｎｍ，表现摩尔吸光系数ε＿５３８＝１．９２×１０￣５Ｌ·ｍｏｌ￣－１·ｃｍ￣－１，Ｎｉ量在０～０．３２μｇ／ｍｌ范围符合比尔定律。用该法测定了铝合金及硫化镍矿石中的微量Ｎｉ，结果与推荐值相符，ＲＳＤ（ｎ＝５）小于５％。     

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

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Ｎａ２Ｂ４Ｏ７－ＮａＯＨ介质中,铜与ＨＤＮＰＡＰＴ形成的红色配合物,其组成比为１：２,λｍａｘ＝５４０ｎｍ,表观摩尔吸光系数ε５４０＝１．７３×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１,铜的质量浓度在０￣３６０μｇ／Ｌ符合比尔定律。方法应用于大     

2，4－二溴－6－羧基苯重氮氨基偶氮苯光度法测定痕量铊的研究

研究了新试剂２，４－二溴－６－羧基苯重氮氨基偶氮苯与Ｔｌ（Ⅲ）的高灵敏显色反应。在非离子表面活性剂ＴｒｉｔｏｎＸ－１００存在下，于ｐＨ１０．５的ＮＨ＿３·Ｈ＿２Ｏ－ＮＨ＿４Ｃｌ缓冲介质中，Ｔｌ（Ⅲ’）与该试剂生成红色配合物，其配合物的最大吸收波长位于５２０ｎｍ处，摩尔吸光系数为１．８３×１０￣５Ｌ·ｍｏｌ￣－１·ｃｍ￣－１。Ｔｌ（Ⅲ’）量在０～０．６４μｇ／ｍｌ范围内符合比尔定律。方法用于废水中痕量Ｔｌ的测定，结果与其它方法结果相符。测定工业废水及粉煤灰中痕量Ｔｌ的ＲＳＤ（ｎ＝６）在１．６％～３．２％范围。     

对碘偶氮氯膦与铅显色反应及其应用

研究了对碘偶氮氯膦（ＣＰＡ－ｐＩ）与Ｐｂ￣２＋的显色反应。在ｐＨ５．８的（ＣＨ＿２）＿６Ｎ。－ＮＯ＿３缓冲介质中，Ｐｂ￣２＋与ＣＰＡ－ｐｌ形成１：２的蓝绿色配合物，在６７５ｎｍ处测定配合物的吸光度，其表现摩尔吸光系数为２．４７×１０￣４Ｌ．ｍｏｌ￣－１·ｃｍ￣－１Ｐｂ￣２＋浓度在０～１．１６×１０￣－５ｍｏｌ／Ｌ即０～２．４μｍｌ）符合比尔定律。试验了２０余种共存离子的影响，经共沉淀结合巯基棉分离预处理试样溶液后，测定了硫精砂中微量Ｐｂ的含量。     

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（ＤＢＰＦ）形成高灵敏的多元配合物，其ε＿（５９０）＝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Ｎａ＿２ＳＯ＿４的加入能显著地提高体系的灵敏度。Ｓｃ量在０～０．３６ｕｇ／ｍｌ范围内遵守比尔定律。方法可直接测定合成混合稀土中的Ｓｃ，回收率在９８％～１０５％；结合沉淀分离和ＰＭＢＰ萃取分离，实现了地质试样中痕量Ｓｃ的测定。     

痕量银与meso－四（对－磺酸基苯基）卟啉显色反应的研究

研究了Ａｇ（Ｉ）与ｍｅｓｏ－四（对－磺酸基苯基）叶琳的光催化显色反应。在ｐＨｌ０的缓冲溶液中形成稳定的Ａｇ（Ｉ）－ＴＰＰＳ＿４－ＣＴＭＡＢ三元配合物，其最大吸收波长为４２６ｎｍ，组成为Ａｇ（１）ＴＰＰＳ＿４：ＣＴＭＡＢ＝１：１：２。表观摩尔吸光系数为２．７９×ｌ０￣５Ｌ·ｍｏｌ￣－１·ｃｍ￣－１，Ａｇ（１）的浓度在０～０．２μｇ／ｍｌ内符合比尔定律。基于此建立的测Ａｇ（Ｉ）方法灵敏度高，结合巯基棉分离干扰，可用于矿物中Ａｇ（Ｉ）的测定。     

邻氯苯基荧光酮胶束光度法测定氮化硅中镁的研究

研究了在氯化十六烷基吡啶（ＣＰＣ）和乳化剂ＯＰ存在下，Ｍｇ与邻氯苯基荧光酮（ｏ－Ｃｌ－ＰＦ）的显色反应。在ｐＨ１２的碱性介质中，Ｍｇ（Ⅱ）与ｏ－Ｃｌ－ＰＦ形成１：３的蓝色配合物，其λ＿ｍａｘ＝６１２ｎｍ，表现摩尔吸光系数ε＿６１２＝１．３９×１０￣５Ｌ·ｍｏｌ￣－１·ｃｍ￣－１，Ｍｇ（Ⅱ）在０～０．２μｇ／ｍｌ范围内符合比尔定律。方法用于新陶瓷材料氮化硅（Ｓｉ＿３Ｎ＿４）中微量ＭｇＯ的测定，其结果与原子吸收光谱法相符。     

邻羟基苯基重氮氨基偶氮苯与铜显色反应的研究及应用

研究了邻羟基苯基重氮氨基偶氮苯与Ｃｕ＾２＋的显色反应。在乳化剂ＯＰ存在下及ＰＨ１０．０－１２．０的Ｎａ２Ｂ４Ｏ７－ＮａＯＨ缓冲介质中，Ｃｕ＾２＋和ｏ－ＨＤＡＡ形成１“３的红色配合物，其最大吸收波长为５４６ｎｍ，表观摩尔吸光系数４．２０＊１０＾４Ｌ．ｍｏｌ＾－３．ｃｍ＾－１。     

锌试剂与微量汞反应的分光光度研究及环境学意义

本文研究了在ＰＨ＝６．７０的缓冲溶液（ＫＨ２ＰＯ４－ＮａＯＨ）中锌试剂与汞生存的蓝色配合物。在最大吸收外吸光度与汞离子的含量成线性关系,配合物的吸收峰值为λｍａｘ＝５４５ｎｍ,比锌试剂本身吸收峰值４９０ｎｍ位移５５ｎｍ,配合物的表观摩尔吸光系数εε＝２．８＊１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１。汞离子的标准工作曲线在０．１－２５μｇ．ｍＬ＾－１的范围内,符合朗伯－比定律。最低检测浓度为０．０１μｇ     

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）。     

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