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。     

镍与邻羧基苯基重氮氨基偶氮苯的显色反应及其应用

在乳化剂ＯＰ存在下，于ｐＨ９．７～１０．０的Ｎａ＿２Ｂ＿４Ｏ＿７－ＮａＯＨ缓冲介质中，Ｎｉ￣（２＋）与邻羧基苯基重氮氨基偶氮苯（ＣＤＡＡ）形成组成比为１：２的稳定的红色配合物，其吸收峰波长在５４０ｎｍ，对比度△λ＝１２６ｎｍ，表观摩尔吸光系数为１．９９×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），室温下２０ｍｉｎ内显色反应完全，有色配合物至少稳定１２ｈ。方法线性范围是０～０．２０μｇ／ｍｌＮｉ，检测限为０．０００４μｇ／ｍｌ。在掩蔽剂存在下，方法用于矿样和低合金钢的分析，结果与标准值相符，其ＲＳＤ（ｎ＝６）分别为１．８％和３．１％，标准加入回收率为９５．０％～１０１．２％。     

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。     

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。     

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％。     

PAN－S光度法测定水和河泥中微量锰

本文研究了ＰＡＮ－Ｓ与锰的显色反应。配合物的最大吸收峰位于５３８ｎｍ波长处，表观摩尔吸光系数为２．９×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），锰量在０─１．６μｇ／ｍｌ范围内符合比尔定律，方法用于水和河泥中微量锰的测定，结果良好。     

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。     

N-间甲苯基-N′-(对氨基苯磺酸钠)硫脲与铜的显色反应及应用

研究了新试剂Ｎ－间甲苯基－Ｎ′－（对氨基苯磺酸钠）硫脲（ＭＭＰＴ）与Ｃｕ２＋的显色反应。结果表明,在ｐＨ４．６～５．６的ＨＡｃ－ＮａＡｃ介质中,Ｃｕ２＋与ＭＭＰＴ形成的配合物至少稳定５ｈ,其λｍａｘ＝３７０ｎｍ,表观摩尔吸光系数为１．１２×１０５Ｌ·ｍｏｌ－１·ｃｍ－１。Ｃｕ２＋的质量浓度在０．０８～１．４ｍｇ／Ｌ时符合比尔定律,相关系数ｒ＝０．９９９１。方法简便、快速,用于铅矿中铜的分析,测定结果与监控样推荐值相符,对ｗ（Ｃｕ）＝０．８％的试样测定６次,ＲＳＤ＝３．２％。     

1，5－二（2－羟基－5－磺基苯基）－3－氰基甲■分光光度法测定煤矸石中微量镓

常温下在ｐＨ４的ＨＡｃ－ＮａＡｃ缓冲体系中，Ｇａ与１，５－二（２－羟基－５－磺基苯基）－３－氰基甲　（ＤＳＰＣＦ）形成稳定的蓝色配合物。该配合物在波长６３０ｎｍ处有最大吸收，其表观摩尔吸光系数为３．８×１０￣４Ｌ·ｍｏｌ￣－１·ｃｍ￣－１，配合比为ｎ（Ｇａ）：ｎ（ＤＳＰＣＦ）＝１：２，显色反应在２０ｍｉｎ内完成，稳定时间至少２４ｈ，Ｇａ量在０～１．８ｍｇ／Ｌ时遵守比尔定律。采用ＴＢＰ萃淋树脂分离干扰元素后可实现煤矸石中Ｇａ的测定。     

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.     

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     

PALEOZOOLOGY

正20141609 Chen Guiying(College of Earth Sciences,Guilin University of Technology,Guilin 541004,China);Han Nairen New Materials of Stylophora from the Upper Cambrian of the Jingxi Area,Guangxi,South China(Acta Palaeontologica Sinica,ISSN0001-6616,CN32-1188Q,52(3),2013,p.288-293,2 illus.,12 refs.)Key words:Stylophora,Guangxi     

GEOPHYSICS

正20140634 Cao Lingmin(Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Xu Yi Finite Difference Tomography of the Crustal Velocity Structure in Tengchong,Yunnan Province(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,56(4),2013,p.1159-1167,6illus.,35refs.,with English abstract)