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     

2-〔2-(6-甲基苯并噻唑)偶氮〕-5-二乙氨基苯甲酸与钴的显色反应及其应用

在十二烷基硫酸钠存在下，于ｐＨ４８～７４的缓冲溶液中，２＿〔２＿（６＿甲基苯并噻唑）偶氮〕＿５＿二乙氨基苯甲酸（６＿Ｍｅ＿ＢＴＡＥＢ）与Ｃｏ（Ⅱ）发生显色反应，形成稳定的蓝紫色络合物，其组成为ｎＣｏ（Ⅱ）∶ｎ６＿Ｍｅ＿ＢＴＡＥＢ＝１∶２，最大吸收波长为６５０ｎｍ，ε为１３８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ｃｏ（Ⅱ）质量浓度在０～０３２ｍｇ／Ｌ时服从比尔定律。方法可直接用于维生素Ｂ１２和含钴分子筛中微量Ｃｏ（Ⅱ）的测定，结果与原子吸收法相符。对于ｗ（Ｃｏ）＝０．８２％的含钴分子筛测定８次，其ＲＳＤ为１３４％。     

2-[2-(5-甲基苯并噻唑)偶氮]-5-二乙氨基苯甲酸的离解平衡及其与铁的显色反应

研究了新显色剂２－［２－（５－甲基苯并噻唑）偶氮］－５－二乙氨基苯甲酸（５－Ｍｅ－ＢＴＡＥＢ）的离解平衡及与Ｆｅ２＋形成配合物的条件。在十二烷基硫酸钠的存在下,５－Ｍｅ－ＢＴＡＥＢ与Ｆｅ２＋形成稳定的蓝紫色２∶１配合物,其最大吸收波长为６４０ｎｍ,表观摩尔吸光系数为１．０３×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。Ｆｅ２＋的质量浓度在０～４８０μｇ／Ｌ时服从比尔定律。方法用于部级铝合金标样中微量铁的测定,结果与推荐值相符,对ｗ（Ｆｅ）为０．１％～０．５％的样品测定１０次,ＲＳＤ在０．８５％～１．９５％,用于测定矿泉水中ｗ（Ｆｅ）／１０－６铁的测定,ＲＳＤ＜１．５％（ｎ＝７）,加标回收率９８．９％～９９．４％     

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     

汞－碘化钾－甲基紫－Triton X－305体系光度法测定痕量汞

在［ＨｇＩ＿４］￣２－与甲基紫（ＭＶ）所形成的不溶于水的蓝色离子缔合物中，加入非离子表面活性剂ＴｒｉｔｏｎＸ－３０５，可产生明显的增溶作用，据此建立了一个水相测定Ｈｇ的方法。该体系的最大吸收峰位于６５０ｎｍ处，摩尔吸光系数为１．１２×１０￣５Ｌ·ｍｏｌ￣－１·ｃｍ￣－１。缔合物的组成比为ｎ（Ｈｇ）：ｎ（Ｉ￣－）：ｎ（ＭＶ）＝１：４：２，Ｈｇ（Ⅱ）浓度在０～１．０ｍｇ／Ｌ时遵守比尔定律。结合巯基棉分离，实现了牛肝标样、环境水样及茶叶中痕量Ｈｇ的测定。     

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％。     

钪─埃铬菁R─氯化十六烷基吡啶─乳化剂OP显色体系及其应用研究

在ｐＨ５６～６４的缓冲介质中，Ｓｃ（Ⅲ）埃铬菁Ｒ（ＥＣＲ）氯化十六烷基吡啶（ＣＰＣ）乳化剂ＯＰ形成蓝色配合物，其组成比ｎＳｃ∶ｎＥＣＲ∶ｎＣＰＣ＝１∶２∶２。配合物的最大吸收波长在６１０ｎｍ处，表观摩尔吸光系数为１７１×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。Ｓｃ质量浓度为０～０２４ｍｇ／Ｌ时遵守比尔定律。拟定的方法结合ＰＭＢＰ萃取分离，测定钨矿及其浸出渣中的微量Ｓｃ，可获满意结果     

铁—磺基水杨酸—二甲氧基羟基苯基荧光酮—TritonX—100体系的光度研究 …

研究了在表面活性剂存在下,铁与新显色剂二甲氧基羟基苯基荧光酮（ＤＭＨＰＦ）的显色反应。在ｐＨ９．０～１０．５的氨性介质中,有磺基水杨酸（Ｓａｌ）存在下,形成Ｆｅ３＋ＳａｌＤＭＨＰＦＴｒｉｔｏｎＸ１００四元混配配合物,其最大吸收峰在５９０ｎｍ,测定波长选择６１０ｎｍ,表观摩尔吸光系数分别为１．３×１０５Ｌ·ｍｏｌ－１·ｃｍ－１和９．４×１０４Ｌ·ｍｏｌ－１·ｃｍ－１。配合物组成比ｎＦｅ３＋∶ｎＤＭＨＰＦ＝１∶２,Ｆｅ３＋的质量浓度为０～６００μｇ／Ｌ时符合比尔定律。以直接光度法测定工业硅和石灰石样品中微量铁,结果与标准值相符,５次测定的ＲＳＤ在０．６４％～２．４１％。     

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。     

6─溴─苯并噻唑偶氮变色酸双波长标准加入法同时测定铁和铝的研究

于５５℃水浴加热条件下，在阳离子表面活性剂ＣＴＭＡＢ存在的ＨＡｃＮａＡｃ（ｐＨ６２）缓冲介质中，Ｆｅ（Ⅲ）和Ａｌ（Ⅲ）均能与６溴苯并噻唑偶氮变色酸（６ＢｒＢＴＣＡ）形成有色配合物，其最大吸收波长分别为６６４ｎｍ和６４２ｎｍ，表观摩尔吸光系数分别为１１４×１０５和１０８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，配合物吸光度至少稳定２４ｈ，组成比均为ｎＭ∶ｎＲ＝１∶２。用双波长标准加入法同时测定铁和铝，方法灵敏度高且消除了吸收光谱严重重叠的影响，用于硅砖、石灰石中铁和铝的同时测定，结果满意     

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