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1.
作者合成的新显色剂2,4-二溴-6-羧基苯基重氮氨基偶氮苯,在pH 11.0的Na_2B_4O_7-NaOH缓冲介质中,有非离子表面活性剂Triton X-100存在下,可与Ag(Ⅰ)生成稳定的2:1红色配合物,配合物的λ_(max)=552nm,表观摩尔吸光系数ε_(552)=1.05×10~5 L·mol~(-1)·cm~(-1)。Ag量在0~400ng/ml范围内符合比尔定律。方法用于测定废水及矿石中的痕量Ag,结果满意。  相似文献   

2.
曾佐涛  徐其亨 《岩矿测试》1992,11(3):207-210
报道了新试剂8-氨基喹啉-5-偶氮-对苯甲酸(AQBA)的合成及分析应用。在阳离子表面活性剂CTMAB存在下,Au(Ⅲ)与AQBA在碱性介质中反应形成蓝绿色配合物,其最大吸收波长在608nm处,表观摩尔吸光系数为9.11×10~4L·mol~(-1)·cm(-1),Au量在0~1.8μg/ml范围内遵守比尔定律。所建立的新分析方法已应用于测定矿石及阳极泥中的痕量Au,结果满意。  相似文献   

3.
铀-邻氯苯基荧光酮-吐温-80显色体系的研究和应用   总被引:1,自引:0,他引:1  
研究了U(Ⅵ)与邻氯苯基荧光酮(o-Cl-PF)的显色反应条件:在非离子表面活性剂(吐温-80)存在下,pH 8.0三乙醇胺(TEA)-HCl缓冲介质中形成紫红色配合物,最大吸收波长在560mn,ε=1.48×10~5 L·mol~(-1)·cm~(-1),含U量在0~1.2μg/ml范围内符合比耳定律。结合D_(235)型强碱性阴离子交换树脂分离,方法可用于矿石中痕量U的测定。  相似文献   

4.
报道了新显色剂1-偶氮苯-3-(5-氯-2-吡啶)-三氮烯的合成及其与镍的显色反应。在pH10. 5的Na2B4O7-NaOH缓冲溶液中和表面活性剂OP存在下, 1-偶氮苯-3-(5-氯-2-吡啶)-三氮烯可与镍发生显色反应,生成3∶1的红色配合物,据此建立了分光光度法测定镍的方法。配合物的最大吸收峰位于540nm处,表观摩尔吸光系数为1. 62×105 L·mol-1·cm-1。Ni2+的质量浓度在0~480μg/L符合比尔定律。用拟定方法测定合金中的微量镍,结果与标准值相符, 6次测定的相对标准偏差(RSD) <2%。  相似文献   

5.
研究了在催化剂苯羟乙酸的存在下,me so-四(对-三甲铵基苯基)卟啉与Bi(Ⅲ)的显色反应。在pH 5.7的HAc-NaAc介质中,于沸水浴中反应5min完成,配合物的最大吸收波长为464mn,表现摩尔吸光系数为3.15×10~5L·mol~(-1)·cm~(-1),Bi(Ⅲ)含量在0~0.48μg/ml范围内呈线性关系,配合物的组成为Bi(Ⅲ):T(4-TAP)P=2:3。方法可用于矿样中痕量Bi的测定。  相似文献   

6.
研究了新显色剂4,4,'-二[(8-羟基喹啉)偶氮]-3.3'-二甲基联苯(D-HQADMB)与Zn(Ⅱ)的显色反应条件。在CPC存在下的pH7.5~8.5缓冲介质中、Zn(Ⅱ)与D-HQADMB形成稳定的深红色配合物,组成比为Zn(Ⅱ):D-HQADMB=1:2,λ_(max)=550nm,表观摩尔吸光系数为7.19×10~4 L·mol~(-1)·cm~(-1),Zn量在0~1.25μg/ml范围内服从比尔定律。方法可用于测定矿样中的Zn。  相似文献   

7.
钍—偶氮胂Ⅲ—乙醇体系显色反应的研究及应用   总被引:1,自引:0,他引:1  
伊丽莹  张海政 《岩矿测试》1991,10(3):182-184
本文研究了在乙醇存在的体系中偶氮胂Ⅲ与Th的显色反应条件。当乙醇含量为48%时,Th与偶氮胂Ⅲ反应的最佳酸度为3.4—5.5mol/L HCl,其最大吸收波长为660nm,表观摩尔吸光系数为1.4×10~5L·mol~(-1)·cm~(-1),Th量在0—80μg/25ml范围服从比尔定律。探讨了乙醇的作用机理,并将方法用于岩石中痕量Th的测定,获得良好结果  相似文献   

8.
本文研究了溶剂浮选水杨基荧光酮(SAF)分光光度法测定痕量锗的条件,方法灵敏度高,选择性较好,锗的配合物可被环已烷+醋酸异戊酯定量浮选。用乙醇溶解浮选物后进行光度测定,在λ_(max)502nm处,其摩尔吸光系数为1.75×10~5l·mol~(-1)·cm~(-1),锗的含量在0—20μg/25ml范围内服从比尔定律。本法应用于煤灰中痕量锗的测定,结果令人满意。  相似文献   

9.
报道了新显色剂2-(2-苯并噻唑偶氮)-5-二羧甲氨基苯甲酸(BTACB)的合成,研究了在十二烷基硫酸钠(NaLS)存在下Ni~(2+)与BTACB形成蓝紫色配合物的条件,其λ_(max)~(MR)=600nm,ε=2.79×10~4L·mol~(-1)·cm~(-1),Ni在0~0.6μg/ml范围内服从比尔定律,反应具有一定的选择性。方法已用于直接测定铝合金、纯镁及含一定量Co的钢铁中痕量Ni和经萃取分离后测定纯钴中痕量Ni。  相似文献   

10.
魏琴  马荣 《矿物岩石》1993,13(4):109-112
本文研究了PAN-S与铜的显色反应条件。配合物的最大吸收峰位于550nm波长处,表观摩尔吸光系数ε为2.3×10~4L·mol~(-1)·cm~~(-1),于25ml溶液中铜(Ⅱ)量在0—1.6μg/ml范围内服从比尔定律,方法用于水、河泥和土壤中微量铜的测定,结果良好。  相似文献   

11.
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   

12.
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  相似文献   

13.
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   

14.
15.
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   

16.
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   

17.
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   

18.
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  相似文献   

19.
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   

20.
正20140985Chen Liang(Post-Doctoral Research Station of Mining Engineering,School of Nuclear Resources and Nuclear Fuel Engineering,University of South China,Heng-yang 421001,China);Huang Wei Composition of Major and Correlated Elements with Organic Matters and Paleoclimatic Implication for Lower Paleogene Sediments in Sanshui Basin  相似文献   

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