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1.
高聚物萃取光度法测定钯   总被引:10,自引:0,他引:10  
邓凡政  石影  谭润林 《岩矿测试》2000,19(3):238-240
研究了在聚乙二醇 -硫酸铵 -亚硝基R盐体系中萃取光度法测定钯。在 pH 1 .3的NaAc-HCl缓冲溶液中 ,钯与亚硝基R盐形成橙色配合物 ,被萃取到高聚物相 ,其配合物的最大吸收波长位于 50 0nm处 ,摩尔吸光系数为 1 .58× 1 0 4L·mol- 1.cm- 1,Pd(Ⅱ )与亚硝基R盐的配位比为 1∶3,Pd(Ⅱ )的质量浓度在 0~ 2 .2mg/L内符合比尔定律。方法用于碳 -钯催化剂中钯的测定 ,6次测定的RSD为 2 .7%。  相似文献   

2.
拟定三正辛胺负载泡塑富集地质样品中痕量钯的化学光谱测定方法。一次摄谱的测定范围为 0 .1× 10 - 9~ 2 0 0× 10 - 9  相似文献   

3.
弱碱性阴离子树脂分离富集-发射光谱法测定痕量钯   总被引:1,自引:0,他引:1  
在盐酸介质中,钯与氯离子发生反应生成配合物[PdCl6]^2-,该配合物能被大孔弱碱性苯乙烯系阴离子交换树脂吸附。吸附物灰化后,灰分与缓冲剂混合均匀,全部装入杯形电极,发射光谱法测定钯。方法检出限为0.12ng/g(10.0g样品)。方法经国家一级标准物质验证,测定值与标准值相符,精密度(RSD,n=12)为8.9%~13.9%,回收率为89%~118%。方法已用于测定水系沉积物中的痕量钯。  相似文献   

4.
聚酰胺树脂富集分离-光度法连续测定铂和钯   总被引:1,自引:1,他引:1  
刘海玲  李姝 《岩矿测试》2004,23(1):37-39
试验了在柱层析操作条件下,聚酰胺树脂对铂和钯的吸附性能.结果表明,在 0.001~3.5 mol/L的HCl(或王水)介质中,聚酰胺树脂对铂和钯的吸附容量分别为20.92和19.20 mg/g,被酸性硫脲溶液洗脱后,用双十二烷基二硫代乙二酰二胺光度法测定.方法用于矿石中微量铂、钯的富集分离和测定,结果与等离子体发射光谱法及推荐值相符.铂、钯回收率均在93.7%~99.2%,相对误差分别为5.56%和4.44%.  相似文献   

5.
采用717阴离子树脂活性炭联合交换分离富集技术,电感耦合等离子体发射光谱法同时测定富钴锰结壳中痕量金、银、铂、钯。方法检出限四元素分别为:Au1. 3、Ag0. 4、Pd0. 6、Pt4. 8ng/g。样品加标回收率在89. 0% ~110. 3%,相对标准偏差3. 5% ~7. 8% (n=4)。方法已用于富钴锰结壳中痕量金银铂钯的测定。  相似文献   

6.
石墨炉原子吸收光谱法测定地质样品中的痕量铂、钯   总被引:1,自引:0,他引:1  
本文提出了用717阴离子交换树脂富集铂、钯的石墨炉原子吸收光谱分析方法。对富集铂、钯的条件,共存离子的干扰情况以及在GF-2000型石墨炉中测定铂、钯的最佳条件进行了研究。样品用王水分解后,在10%的王水介质中,用717阴离子交换树脂富集铂、钯,以热的硫脲溶液解脱,在拟定的工作条件下,于石墨炉原子吸收光谱仪上进行测定,大量的共存离子不干扰测定。方法简便快速,检出限分别为Pt8.8×10~(-9)g/ml,Pd3.4×10~(-9)g/ml,方法的相对标准偏差分别为Pt7.09%Pd11.48%,适用于地质样品中铂、钯的测定,结果令人满意。  相似文献   

7.
韩权  李娟  杨晓慧  单露  霍燕燕 《岩矿测试》2009,28(5):491-493
合成并用红外光谱和元素分析鉴定了氟代吡啶偶氮氨类新试剂5-(5-氟-2-吡啶偶氮)-2,4-二氨基甲苯(5-F-PADAT),并研究了该试剂与钯显色的反应。结果表明,在0.32~3.84 mol/L高氯酸溶液中,试剂与钯形成1∶1的紫红色络合物,其最大吸收峰位于566 nm,表观摩尔吸光系数为4.84×104L.mol-1.cm-1,钯的浓度在0~2000μg/L符合比耳定律。方法选择性好,大量常见金属离子不干扰钯的测定,操作简单,应用于矿样和催化剂中微量钯的测定,结果与原子吸收光谱法相符。  相似文献   

8.
研究了苯基硫脲—正辛醇体系萃取石墨炉原子吸收光谱法测定化探样品中超痕量铂钯的方法。确定了仪器的最佳条件,并从介质酸度、萃取时间和体积、苯基硫脲的浓度、萃取剂体积和干扰情况等方面进行了详细的考察。样品经王水溶解,液相萃取,以有机相进样测定。铂、钯检出限分别为0.5×10~(-9)和0.1×10~(-9)。对含铂14.7×10~(-9)和钯15.2×10~(-9)的矿样重复取样溶矿测定8次,其相对标准偏差分别为6.0%和4.7%,测试质量较好。  相似文献   

9.
钒矿石尾渣中六价铬的测定   总被引:1,自引:0,他引:1  
彭斌 《安徽地质》2002,12(1):78-80
文中提出在pH=10~11时,加入一定量的铁,可使钒尾渣中高倍的钒与六价铬有效分离,然后以二苯基碳酰二肼(DPC)吸光光度法测定六价铬.本法回收率在94%~102%之间,对同一试样的多次重复测定,结果在2.42×10-4%~3.00×10-4%间.方法简单易行,可消除大量钒的干扰.  相似文献   

10.
唐毅  艾靖娇 《云南地质》2014,33(3):421-425
将样品用王水分解定容静置后,采用阴离子树脂—活性炭混合吸附体系进行静态吸附,将吸附体高温灰化后再以王水分解定容,用石墨炉原子吸收光谱仪测定溶液中的铂、钯.该方法检出限为铂0.084ng/g,钯0.025 ng/g,回收率铂为95%~ 103%,钯为95%~ 98%.  相似文献   

11.
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   

12.
13.
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   

14.
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.)  相似文献   

15.
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,  相似文献   

16.
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.)  相似文献   

17.
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-  相似文献   

18.
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  相似文献   

19.
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  相似文献   

20.
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)  相似文献   

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