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《Rare Metal Materials and Engineering》 1991-06
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Determination of the Trace Cobalt in Zirconium and Its Alloys

Chen Xueyuan(Northwest Institute for Nonferrous Metal Research)  
The process is as follows: a) The sample is dissociated by hydrofluoric acid and nitric acid, cobalt, in an ammonium citrate medium, is then extracted by 1-Nitroso-2-Naphthol and trichloromethane; b) The resulting organic phase is heated until trichloromethane is evaporated, then the organic substance is dissociated by sulfuric acid and nitric acid, evaporated and dried; c) The residue is dissolved in the mixed acid and cobalt content in the sodium acetate medium is finally determined by 1-Nitroso-2-Hydroxy-3.6-Naphthalene-disulforic acid (sodium salt) photometric method. This method has been successfuly used in determing trace cobalt in the range of 0.0005%—0.0050% in Zr and its alloys.
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【References】
Chinese Journal Full-text Database 1 Hits
1 Fan Jian(Instrument test and Analysis Centre,Central South University of Technology,Changsha,410083),Luo Chongqing(De-partment of Chemistry,Central South University of Technology,Changsha 410083),Fenxi shiganshi,1994,13(5),88-110This is the first biennial;Metallurgical Analysis[J];Analytical Laboratory;1994-05
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Chen Xueyuan (Northwest Institute for Nonferrous Metals Research, Baoji 721014);Determination of Trace Aluminium in Zirconium and Zirconium Alloys[J];Rare Metal Materials and Engineering;1992-06
2 ;DETERMINATION OF TRACE TIN IN ZINC PLATING BATH[J];Electroplating & Pollution Control;1993-04
3 ;DETERMINATION OF SMALL AMOUNT OF CADMIUM IN CHROMATE SOLUTION FOR CADMIUM PLATING BY ATOMIC ABSORPTIONSPECTROSCOPY[J];Electroplating & Pollution Control;1993-05
4 LI Yougguo;Determination of Trace Tin in Zinc Plaing Bath[J];ELECTROPLATING & FINISHING;1994-04
5 LIU Ying ,ZHANG Wen and TONG Jian (Beijing General Research Institute for Non ferrous Metals,Beijing 100088),Fenxi Shiyanshi,1999,18(6):67~70;Determination of Ag,In and Cd in Nuclear Grade Ag In Cd Alloys by Successive Titration Analysis[J];ANALYTICAL LABORATORY;1999-06
6 QU Xin-Wei (Center of Analysis and Testing,Guizhou Titanium Smelt Factory,Zunyi,Guizhou 563004,P.R.China);Determination of Phosphorus in Nickel-Chromium Wire by the Extraction-Phosphomolybdate Blue Spectrophotometry[J];Chinese Journal of Spectroscopy Laboratory;2003-03
7 SU Xianrui ZHAO Shali (Physical and Chemical Analytical Center,Research Institute of Shandong Aluminium Corporation , Zibo,Shandong 255061,P.R.China);Analysis of MgO in Bauxite by AAS[J];CHINESE JOURNAL OF SPECTROSCOPY LABORATORY;1998-04
8 Fang Jianzhang(Environmental Science Institute of South China Normal University, Guangzhou 510631);Gold recovery from gold-electroplating wastewater with emulsion liquid membrane method[J];ENVIRONMENTAL POLLUTION & CONTROL;1998-03
9 Chen Min (Shantou Products Quality Supervision And Testing Institute,Yudong Testing Center of Products Quality Supervision Shantou 515041);Determination of Magnesium in Aluminium Alloy[J];Chemical Engineer;2002-02
10 Wang Yuchun, Zhang Zongfu, Wang Dexian, Huan Binhuei (Department of Chemistry, Jiangxi Normal University, 330027 Nanchang, China);Separation of Scandium from Iron,Manganese,Calcium,Mixed Rare Earths, and Titaniumby Emulsion Liquid Membrane[J];Membrane Science and Technology;1992-01
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 FENG Jianzhang, DU Zhihua, MEI Baogui (Department of Chemistry, Peking University);The Synthesis of 2-(5-Bromo-2'-Thiazolylazo)-5-Dimethyl Amino Benzoie Acid and Its Spectro-photometric Study with the Reaction of Ni(II)[J];Acta Scicentiarum Naturalum Universitis Pekinesis;1992-04
2 Pan Tang (Institute of Aeronautical Materials, Beijing);Rapid Determination of Pb, Sn and Mo in 245 Friction Material by AAS[J];Journal of Materials Engineering;1991-04
3 Wang Yanjun (Northwest Institute for Nonferrous Metal Research);Determination of W in Zr and Its Alloys by Thiocyanate Photometric Method[J];Rare Metal Materials and Engineering;1991-04
4 Yang Shenyan (Northwest Institute for Nonferrous Metal Resarch);The Spectrographic Assay of The Impurities in Sr[J];Rare Metal Materials and Engineering;1991-05
5 Wu Quanxing(Northwest Institute for Nonferrous Metal Research);The Review of the Determination of Gases in Metals[J];Rare Metal Materials and Engineering;1992-01
6 Zhang Ji(Northwest Institute of Nonferrous Metals);Precipitating process applied in the separation of Platinum and Iridium[J];Rare Metal Materials and Engineering;1992-02
7 Yang Shenyan Huang Jinchang (Northwest Institute for Nonferrous Metal Research,Baoji 721014);Analytical Methods for High Temperature Superconducting Materials[J];Rare Metal Materials and Engineering;1992-04
8 Liu Shourong (Tianjin Institute of Hard Alloys, Tianjin 300222);Quantitative Phase Analysis by X-ray for Co Binder Structure in WC-Co Cemented Carbides[J];Rare Metal Materials and Engineering;1992-04
9 An Baolan (Northwest Institute for Nonferrous Metal Research, Baoji 721014);Spectrophotometric Determination of Ruthenium in Ti-Ru-Ni Alloy[J];Rare Metal Materials and Engineering;1992-05
10 Ni Jiashou (Northwest Institute for Nonferrous Metal Research, Baoji 721014);Spectrophotometric Determination of Se in Electrolytic Manganese with 3·3-Diaminobenzidine[J];Rare Metal Materials and Engineering;1992-05
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