流动注射－催化光度法测定痕量锰

在非离子表面活性剂吐温－８０存在的Ｈ３ＰＯ４介质中，Ｍｎ２＋对Ｖ（Ｖ）氧化二安替比林苯乙烯甲烷（ＤＡＶＰＭ）成红色化合物的反应具有较强的催化作用，基于此采用流动注射－催化光度法测定了痕量Ｍｎ２＋，该方法的检测波长为５５５ｎｍ，检出限为０．０２μｇ／ＬＭｎ，线性范围为０．０２～６μｇ／ＬＭｎ，进样频率为６０次／ｈ对５μｇ／ＬＭｎ进行１０次测定的相对标准偏差为１．８％。经环境标准样品分析验证方法可行并已用于水样中痕量Ｍｎ２＋的测定。     

流动注射—催化光度法测定痕量锰

在非离子表面活性剂吐温－８０存在的Ｈ３ＰＯ４介质中，Ｍｎ＾２＋对Ｖ（Ｖ）氧化二安替比林苯乙烯甲烷（ＤＡＶＰＭ）成红色化合物的反应具有较强的催化作用，基于此采用流动注射－催化光度法测定了痕量Ｍｎ＾２＋，该方法的检测波长为５５５ｎｍ，检出限为０．０２μｇ／Ｌ Ｍｎ，线性范围为０．０２￣６μｇ／Ｌ Ｍｎ，进样频率为６０次／ｈ，对５μｇ／Ｌ Ｍｎ进行１０次测定的相对标准偏差为１．８％。经环境标准样品分析验     

勘查地球化学找矿中重要指示元素的野外快速分析法（二）银的分析方法

发展了一种可在野外快速测定０．０１０—５０μｇ／ｇ银量的新方法。此法由两个各自独立而又配套的部分组成。一是直接测定０．２５—５０μｇ／ｇ银量的Ａｇ－ＴＭＫ－ＳＤＳ三元络合物光导比色测定法；二是测定０．０１０—０．２５μｇ／ｇ银量的巯基棉分离富集微珠析出比色法。可在同一份试液中依次完成。前者检出限为０．００６μｇ／ｍｌ（Ｋ＝３）；测定铜、铅和锌矿石标样ＧＳＯ－Ｃｕ－１（含银３．８７μｇ／ｇ）、ＧＳＯ－Ｐｈ－１（含银１４．７μｇ／ｇ）和ＧＳＯ－Ｚｎ－１（含银１３．５μｇ／ｇ）中的银，ＲＤＳ（ｎ＝１１）分别为１．６％、３．７％和３．４％；后法可检出５ｎｇ／ｇ银；测定地球化学标样ＧＳＤ－３（含银０．５９μｇ／ｇ）中的银，ＲＳＤ（ｎ＝１１）为６．ｔ％。方法较为简便、快速、准确和灵敏。用光导比色计测定，结果准确度、精度均有较大改善，且与室内原子吸收法相当。故所定方法具有广阔的应用前景。     

微分溶出计时电位法测定地质物料中微量铜

在０．２ｍｏｌ／Ｌ ＨＣｌ－１．０ｍｏｌ／ＬＮａＣｌ－０．１５ｍｏｌ／Ｌ抗坏血酸介质中，用电流氧化微分溶出计时电位法直接测定地质物料中微量Ｃｕ。富集电位－０．５５Ｖ，时间２０～４０ｓ；电极转速２５００ｒ／ｍｉｎ；溶出电流０．２～１μＡ；记录电位范围－０．２～－１．２０Ｖ；清洗电位－０．１０Ｖ，时间１０ｓ。方法检出限０．２μｇ／ｇ，线性范围２～４００ｎｇ／ｍｌ，精密度（ＲＳＤ，ｎ＝１１，４．１μｇ／     

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％。     

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％。     

2,4—二甲氧基苯基荧光酮荧光熄灭法测定铜

研究了在Ｔｗｅｅｎ８０存在下,２,４－二甲氧基苯基荧光酮与铜的配合物的荧光熄灭体系,在ｐＨ为８．０￣８．８的Ｎａ２ＣＯ３－Ｈ３ＢＯ３＋ＫＣｌ缓冲介质中,在λｅｘ＝４００ｎｍ,λｅｍ＝５１０ｎｍ其体系产生的荧光熄灭程度最大。铜的线性范围为０￣２０μｇ／Ｌ。方法的检测限为０．７２μｇ／Ｌ。     

感耦等离子体发射光谱法测定原油中痕量铁镍铜钒

系统地试验了用感耦等离子体发射光谱同时测定原油中痕量元素Ｆｅ、Ｎｉ、Ｃｕ和Ｖ的多种前处理方法,制定出Ｈ２ＳＯ４、ＨＮＯ３分步炭化,５００℃灰化,ＨＣｌ＋ＨＮＯ３（ＶＨＣｌ∶ＶＨＮＯ３＝１∶１）溶解灰分的最佳分解方案。该方法的检出限为１．０～６．０μｇ／Ｌ,精密度好,ＲＳＤ（ｎ＝４）＜４．６％,加标回收率为９６．２％～１１１％。方法已应用于大庆、苏北、惠州等原油样品的分析。     

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％。     

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 ％ 。     

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).     

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     

ENGINEERING GEOLOGY

正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.)