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《Analytical Laboratory》 2004-01
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Simultaneous determination of chromium(Ⅵ) and manganese(Ⅶ) by differential reaction-rate kinetic analysis

JIANG Hua~* and ZHANG Jiang(Department of Chemistry, Yantai Normal University, 264025)  
A novel differential reaction-rate kinetic spectrophotometric procedure was proposed for the simultaneous determination of chromium(Ⅵ) and manganese(Ⅶ). It was based on the difference of rates in the fading reaction of gallocyanine(GC) oxidized by Cr(Ⅵ) and Mn(Ⅶ) in H_2SO_4-H_3PO_4 medium. The linear ranges for the determination of Cr(Ⅵ) and Mn(Ⅶ) were 0~10.0 μg/mL and 0~8.0 μg/mL, respectively. The method was applied to the simultaneous determination of Cr(Ⅵ) and Mn(Ⅶ) in steel samples.
【Fund】: 烟台师范学院基金资助项目 (0 12 90 2 )
【CateGory Index】: O657.3
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【Co-citations】
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1 WANG Xu, XU Shu-kun, FAN Shi-hua (Box 332, Sciences College, Northeastern University, Shenyang 110004, China);Determination of micro amounts of tin in alloy steel by sequential injection spectrophotometry[J];冶金分析;2004-02
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