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。     

钯—二安替比林对溴苯基甲烷—钒体系阻抑动力学光度法测定微量钯

在Ｈ３ＰＯ４介质中,微量Ｐｄ（Ⅱ）能阻抑二安替比林对溴苯基甲烷（ＤＡｐＢＭ）与Ｖ（Ⅴ）的显色反应,阻抑程度与Ｐｄ（Ⅱ）量呈线性相关。据此建立了测定微量Ｐｄ（Ⅱ）的新方法。方法检测限为５６．０μｇ／Ｌ,测定范围为０．０～４８０．０μｇ／ＬＰｄ（Ⅱ）。阻抑反应的表观活化能为８６．７２ｋＪ／ｍｏｌ,表观速率常数为５．５７×１０－４／ｓ,反应终止后至少稳定２４ｈ。试样的加标回收率为９１．７％～１０１％（ｎ＝４）。该法用于ｗ（Ｐｄ）在１０－３水平的冶金产品和催化剂中钯的测定,结果与原子吸收法测定结果相符,ＲＳＤ（ｎ＝６）在２．８％～３．３％。     

新试剂——QAI与钴（Ⅱ）显色反应的研究和应用

本合成了新显色剂２－（８－喹啉偶氮）－咪唑（ＱＡＩ）测定了试剂的离解常数。研究了ＱＡＩ与ＣＯ（Ⅱ）的显色反应，在ｐＨ３．０～７．０的缓冲介质中，ＱＡＩ与ＣＯ（Ⅱ）形成１：３的红色配合物，λｍａｘ＝５３０ｎｍ表面摩尔吸光系数ε＝３．６７×１０＾４Ｌ．ｍｏｌ＾－１．ｃｍ＾－１，钴量在０～２５μｇ／２５ｍｌ范围内符合比耳定律，该法的优点是选择性高和操作简便，做了较大量的Ｃｕ（Ⅱ），Ｎｉ（Ⅱ），Ｆｅ（Ⅱ     

5—（偶氮苯）—8—（4—硝基—1—重氮苯）—氨基喹啉与钯的显色反应及应用

在弱碱性介质中,乳化剂－ＯＰ存在下,５－（偶氮苯）－８－（４－硝基－１－重氮苯）－氨基喹啉（ＰＡＮＰＡＱ）与钯发生显色反应,生成ｎＰＡＮＰＡＱ∶ｎＰｄ（Ⅱ）＝２∶１的蓝色络合物,最大吸收峰位于６４０ｎｍ,摩尔吸光系数为１．０８×１０５Ｌ·ｍｏｌ－１·ｃｍ－１,钯的质量浓度在０～６００μｇ／Ｌ符合比尔定律。所考查的５４种共存离子,对测定Ｐｄ（Ⅱ）基本无影响。方法已用于钯催化剂中Ｐｄ（Ⅱ）的测定,结果与原子吸收法相符,５次测定的ＲＳＤ在１．３％～１．５％。     

福建省花岗岩类Nd-Sr同位素特征及其意义

本文报道了福建省范围内前人分析数据稀疏或空白区域内的１８个古生代－中生代花岗岩体的Ｎｄ、Ｓｒ同位素组成：εＮｄ（ｔ）＝－３．６～－１６．４,（８７Ｓｒ／８６Ｓｒ）ｉ＝０．７０５５～０．７３１８,ｔＤＭ＝１．２～２．３Ｇａ。结合前人分析数据,区分出三个地域区带：福安－南靖断裂以东的沿海带：εＮｄ（ｔ）＝－１．５～－６．８,（８７Ｓｒ／８６Ｓｒ）ｉ＝０．７０５６～０．７０９９,ｔＤＭ＝１．１～１．４５Ｇａ,弧后伸展构造背景下的幔－壳岩浆混合是该带花岗岩的主要成岩方式;福安－南靖断裂以西的内陆区域：εＮｄ（ｔ）＝－４．０～－１６．４,（８７Ｓｒ／８６Ｓｒ）ｉ＝０．７０６４～０．７４１０,ｔＤＭ＝１．３～２．３,其中加里东－印支期花岗岩主要由与麻源群相当之地壳物质部分熔融形成,而燕山期花岗岩,一部分由与麻源群相当或较年轻的地壳物质部分熔融产生,也有一部分可能由壳－幔岩浆混合形成;福建省南部的纬向带：εＮｄ（ｔ）＝－３．６～－７．５,（８７Ｓｒ／８６Ｓｒ）ｉ＝０．７０５５～０．７０９９,ｔＤＭ＝１．２～１．５５,同位素特征与沿海带相似,但该带构造拉张发育时间较沿海带略早     

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）。     

小锍试金－无火焰原子吸收法测定地质样品中超痕量金铂铑钯

将锍试金改成小锍试金，用小锍扣捕集法把分解样品同富集贵金属与分离基体成份结合在一起进行，炼得的锍扣经酸处理除去贱金属硫化物，富集的贵金属采用无火焰原子吸收光谱测定。取一份样可以测定Ａｕ、Ｐｔ、Ｒｈ和Ｐｄ。测定方法的特征质量（ｇ）：Ａｕ１．１×１０￣（－１１），Ｐｔ１．３×１Ｏ￣（－１０），Ｐｄ１．３×１０￣（－１１），Ｒｈ１．２×１０￣（－１１）；线性范围（ｇ／ｍｌ）：Ａｕ０～０．０４０，Ｐｄ和Ｒｈ为０～０．０５０，Ｐｔ为０～０．５０。方法用于超基性岩标样的测定，结果与推荐值相符。     

辽宁八家子三斜锰辉石的发现及其找矿意义

在对辽宁建昌县八家子矿区吴家屯铅锌黄铁矿－硫锰矿矿床进行研究的过程中,首次发现三斜锰辉石,它与锰铝榴石、硫锰矿、黄铁矿等共生,主要产出在铅锌黄铁矿体、硫锰矿体和近矿矽卡岩中。该区的三斜锰辉石为玫瑰红色和暗红褐色,短柱状,两组解理,折射率Ｎｇ＝１．７４９～１．７５３,Ｎｐ＝１．７３７～１．７４８,Ｎｍ＝１．７３４～１．７４１;＋２Ｖ＝４３°;ＤＯ＝３．７８６～３．７９２;ＤＣ＝３．７９～３．８３。化学成分除Ｓｉ外主要为Ｍｎ和Ｆｅ,矿物化学式：（Ｃａ０．２７～０．４３Ｍｇ０．４３～０．５７）０．７５～１．００（Ｍｎ４．９４～５．７７Ｆｅ０．３６～１．３６）６．１６～６．３７［Ｓｉ６．８６～７Ｏ２１］。晶体结构属三斜晶系,玫瑰红色三斜锰辉石的Ｘ射线衍射主要粉晶谱线：３．１３３（１００）,２．９６０（４２）,２．５０２（１３）,２．１８３（１８）,１．９１９（４５）。矿物成因研究表明,三斜锰辉石主要为岩浆岩与含锰白云岩接触交代作用的产物,具明显的成因指示意义     

西阿尔卑斯Dora Maira地块含柯石英白片岩的稳定同位素地球化学与相平衡

用氧同位素温度计测定了西阿尔卑斯ＤｏｒａＭａｉｒａ地块含柯石英—镁铝榴石白片岩的峰期变质温度。石英（柯石英较变后）的δ￣（１８）Ｏ（８．１‰～８．６‰，ｎ＝６），多硅白云母的（６．２‰～６．４‰，ｎ＝３）、蓝晶石的（６．１‰，ｎ＝２）、石榴石的（５．５‰～５．８‰，ｎ＝９）、ｅｌｌｅｎｂｅｒｇｅｒｉｔｅ的（６；３‰，ｎ＝１）和金红石的（３。３‰～３．６‰，ｎ＝３）δ￣（１８）Ｏ（ＳＭＯＷ）值反映了同位素平衡。以石英—石榴石—金红石分馏为基础测定的温度为７００～７５０℃。以对压力敏感的反应：镁铝榴石＋朽石英＝蓝晶石十顽火辉石为依据确定的最小压力为３．１～３．２ＧＰａ。为了通过对温度敏感的脱水反应：滑石十蓝晶石＝镁铝榴石十柯石英十水，来稳定镁铝榴石和柯石英，在７００～７５０℃时，α（Ｈ＿２Ｏ）必须减小到０．４～０。７５。当镁铝榴石在ｘ（ＣＯ＿２）＞０．０２（Ｔ＝７５０℃，Ｐ＝３．０ＧＰａ）不稳定时，α（Ｈ＿２Ｏ）的减少不会是由于ＣＯ＿２的稀释所引起的。当缺乏较多的外来流体稀释剂（即ＣＨ＿４或Ｎ＿２时，就需要有熔体相）。在α（Ｈ＿２Ｏ）＝１．Ｏ时，花岗岩的固相线温度为６８０℃／３．０ＧＰａ，在α（Ｈ＿２Ｏ）＝０．     

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.     

Late Wuchiapingian (Late Dzhulfian,early Late Permian) limestone olistolites within the Tertiary flysch of Glypia Unit (Mount Parnon,central–eastern Peloponnesus,Greece)

Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.     

PALEONTOLOGY

正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.)     

GEOCHEMICAL EXPLORATION

正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.)     

MICROPALAEONTOLOGY

正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.)     

PETROLOGY

正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus.,     

ENVIRONMENTAL GEOLOGY

正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an     

PROSPECTING EXPLORATION

正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of