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《Chinese Journal of Analytical Chemistry》 1987-11
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SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF MICROAMOUNTS OF TUNGSTEN AND MOLYBDENUM IN STEELS BY DUAL-WAVELENGTH METHOD

Fang Guozhen(Department of Chemistry, Sichuan University, Chengdu);Zhang Handing, Jiang Yuegao and Dai Renzhi(Seamless Steel Tube Factory of Chengdu)  
The present method is based on the result that in a medium of 0.30—0.45M HC1 both tungsten(Ⅵ) and molybdenum(Ⅵ) form soluble coloured ternary complexes with phenylfluorone in the presence of cetyltrimethylammonium bromide, The molar absorptivities were 9.2×10~4 at 515.0nm for the W complex and 1.1×10~5 at 524.0 nm for the Mo complex. W and Mo were determined in the same solution by measuring the absorbance difference between 534.5 and 515.0, 507.0 and 524.0 nm, respectively. The calibration graphs were reetilirear for 0—1.4μg ml~(-1) of W and 0—0.7μg ml~(-1) of Mo. The method can be used to determine W and Mo in several alloy-steels without any preliminary separation. The relative errors were 0.19 to 1.5% for W and O to 4.95% for Mo, and the coefficients of variation (n=5) 0.90 to 2.8% for W and 0.50 to 5.4% for Mo.
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【Co-citations】
Chinese Journal Full-text Database 9 Hits
1 Fang Guozhen,Guo Zhongxian (Department of Chemistry , Sichuan University, Chengdu 610064);Advances in Differential Reaction-rate Kinetic Analysis and Its Applications[J];Chinese Journal of Analytical Chemistry;1993-11
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【Co-references】
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1 Wu Yutian, et al Department of pharmacy;APPLICATION OF COMPUTER-ASSISTED CONVOLUTION DURVE METHOD TO SPECTROPHOTOMETRIC ANALYSIS: DETERMINATIONS OF SMZ AND TMP IN COMPOUND TABLETS OF SINOMIN[J];Academic Journal of Second Military Medical University;1985-01
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4 Yang Quansheng Nie Jilan Zhang Xing Wan Yiqun (Department of Chemistry,Jiangxi University);DUALWAVELENGTH SPECTROPHOTOMETRIC STUDY OF GEL SUSPENDED BACKGROUND Ⅰ.DETERMINATION OF COPPER IN COPPER ORE WITH BIS-CYCLOHEXANONE-OXALYLDIZONE (BCO)[J];Chinese Journal of Analytical Chemistry;1987-07
5 Hu Shoukun, Shu Changhua, Li Qingyi, Cheng Shulin and Yin Anzhong (Department of Chemistry, Sichuan University);SPECTROPHOTOMETRIC DETERMINATION OF RHODIUM WITH SALICYLFLUORONE AND CETYLTRIMETHYLAMMONIUM BROMIDE[J];Chinese Journal of Analytical Chemistry;1987-09
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9 Zhang Guang (Shaanxi Normal University, Xi'an) Liu Bin (Xianyang Teachers College);SPECTROPHOTOMETRIC DETERMINATION OF MERCURY WITH 3, 5-DiCI-PADAP IN THE PRESENCE OF NON-IONIC SURFACTANT[J];Chinese Journal of Analytical Chemistry;1987-10
10 Wang Zunben, Zheng Zhuzi and You Liufang (Department of Chemistry, Xiamen University);DETERMINATION OF COMPOSITIONS AND STABILITY CONSTANTS OF POLYNUCLEAR COMPLEXES BY STRAIGHT-LINE METHOD[J];Chinese Journal of Analytical Chemistry;1987-10
【Secondary References】
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