摘要
建立了以盐酸、硝酸混合酸分解试样,在6～7 mol/L的硫酸酸度下,用过硫酸铵氧化钒为五价,用硫酸亚铁铵滴定法测定钒铝合金中钒量的方法。对试料量、硫酸亚铁铵标准滴定溶液浓度、硫酸酸度、过硫酸铵溶液用量等测定条件进行了选择和优化,确定了最佳试验条件。方法用于钒铝合金样品中钒量的测定,相对标准偏差(RSD,n=8)小于0.2%,加标回收率在99.8%～100.7%,能够完全满足仲裁分析和炉前快速分析的检验要求。与高锰酸钾氧化法相比,该方法操作简便,药品试剂消耗量少,分析效率更高。
In this paper, the ammonium ferrous sulfate titrimetric method for the determination of vanadi um in VA1 alloy has been established, which used HC1 ＋ HNO3 to decompose the sample, used ammoni um persulfate oxidate the vanadium to pentavalent in the 6 7 mol/L sulfuric acid. The determination conditions , such as sample quantity, concentration of ammonium ferrous sulfate standard solution, sulfu ric acidity, ammonium persulfate solution dosage, were selected and optimized to determine the best ex perimental conditions. The method was used to measure the content of Vanadium in the VAI alloy, and the determination of relative standard deviation （RSD,n = 8） 〈0.2%. The recoveries was 99.8% - 100.7% ,which fully meet the analysis and quick analysis requirement.
出处
《钢铁钒钛》
CAS
北大核心
2012年第6期99-102,共4页
Iron Steel Vanadium Titanium
关键词
钒铝合金
钒量
过硫酸酸铵
硫酸亚铁铵滴定法
V-Al alloy
vanadium content
ammonium persulfate
ammonium ferrous sulfate titrimetricmethod,
