共查询到20条相似文献，搜索用时 234 毫秒
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原子荧光光谱法快速测定锌精矿中汞,砷,锑 总被引：8，自引：1，他引：7
研究拟定了不经分离富集,直接测定锌精矿中Ｈｇ、Ａｓ、Ｓｂ的原子荧光光谱法。适用于锌精矿中０￣０．１２５％的Ｈｇ;０￣０．５％的Ａｓ及０￣０．１％的Ｓｂ的测定,方法简便、快速,结果令人满意。 相似文献
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微晶萘—双十二烷基二硫代乙酰二胺吸附显色连续测定铂和钯 总被引：3，自引：0，他引：3
微晶萘－双十二烷基二硫代乙酰二胺（ＤＤＯ）吸附显色剂与铂（Ⅱ）、钯（Ⅱ）卤络合物所形成的有色螯合物沉淀，经分离洗涤后分别溶于氯仿－石油醚混合溶剂中，于５１０ｎｍ和４４５ｎｍ处测定铂和钯螯合物的吸光度，在１０ｍＬ的ＣＨＣｌ３－石油醚中０￣１０μｇＰｔ及Ｐｄ均符合比尔定律。采用在铜镍矿基体中标准加入法检验所拟方法，钯的回收率为９３．３％￣１０６．７％，铂为９０％￣１０６％。 相似文献
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研究了４１０哌啶树脂对Ｃｄ的吸附行为，在２％～２０％ＨＣＩ介质中［ＣｄＣｌ＿３］￣－被树脂吸附，采用４％～３０／ＨＮＯ＿３溶液可以解脱Ｃｄ，回收率在９６％以上。测定了Ｃｄ在该树脂上的分配系数为５４９０，对含Ｃｄ０．０６７μｇ／ｇ的标样ＧＳＲ－３平行测定６次，相对标准偏差为９．５％。方法用于化探样品中０．０Ｘ×１０￣－６级Ｃｄ的测定，结果满意。 相似文献
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疏松多孔、固结程度低的虎亭白土，属火山碎屑沉积岩。湿法选矿膨润土的产率为２８％￣３５％，蒙脱石含量８０％左右（二次精矿可达９０％以上），可生产优质膨润土，用作涂料，陶瓷和冶金球团的原料，铸造用砂的胶结剂，污水处理的吸附剂，牲畜饲料添加剂等。 相似文献
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澜沧铅锌银铜矿床矿物包裹体及成矿物化条件的研究 总被引：4，自引：0，他引：4
矿物流体包裹体的研究表明，澜沧铅锌银铜矿床成矿流体的温度为１６０￣３５０℃，压力６９０００ｋＰａ，盐度４．６￣１７．０ＮａＣｌｗｔ％，密度０．８５￣１．０ｇ／ｃｍ＾３，ｆｓ２１０＾－９．３￣１０＾－１１．０Ｐａ，ｆｏ２１０＾－３５￣１０＾－３７Ｐａ，Ｐｈ值５．１￣５．７。成矿元素主要以氯化物络合物的形式迁移、温度降低，ｆｓ２和ｐＨ值的升高是引起矿物质沉淀的主要因素。 相似文献
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塞曼原子吸收法测定大洋多金属结核中的铜钴镍 总被引：1，自引：0，他引：1
报道以ＨＮＯ３－ＨＦ－ＨＣｌＯ４分解多金属结核样品，用日立１８０－８０偏振塞曼原子吸收分光光度计测定Ｃｕ、Ｃｏ和Ｎｉ的方法。试验了介质及共存元素对测定的影响，选择了最佳测定条件。用该法测定了大洋锰结核标准物质中的Ｃｕ、Ｃｏ、Ｎｉ，结果与标准值符合，且方法已应用于大批量样品分析中。对这些标样６次测定的ＲＳＤ分别是Ｃｕ０．４９％￣１．９９％，Ｃｏ１．８６％￣２．６６％，Ｎｉ０．４６％￣１．９６％。 相似文献
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5‘—硝基水杨基荧光酮与锆显色反应及其应用 总被引：8，自引：0，他引：8
在０．０８￣０．１０ｍｏｌ／Ｌ ＨＣｌ介质中，溴化十六烷基三甲铵（ＣＴＭＡＢ）存在下，Ｚｒ（Ⅳ）与５＇－硝基水杨基荧光酮（５＇－ＮＳＦ）发生显色反应，形成１：４的桔红色络合物，λｍａｘ＝５４０ｎｍ，ε为１．４６×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，Ｚｒ（Ⅳ）含量在０￣０．５ｍｇ／Ｌ符合比尔定律。方法用于氧化铝及陶瓷釉料中锆的测定，结果与ＩＣＰ－ＡＥＳ法相符，ＲＳＤ（ｎ＝５）在１．３％￣３．７％。 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
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. 相似文献
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Muriel Rocher Stéphane Baize Stéphane Jaillet Edward Marc Cushing Yannick Lozac&#x;h Francis Lemeille 《Comptes Rendus Geoscience》2003,335(8):701-708
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). 相似文献
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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 相似文献
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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), 相似文献
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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- 相似文献
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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- 相似文献
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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.) 相似文献
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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 相似文献
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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.) 相似文献