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硫酸亚铁铵滴定法测定铁矿石中钒含量国家标准研究 被引量:3

Study on national standard for the determination of vanadium content in iron ore by ammonium ferrous sulfate titrimetric method
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摘要 通过对硫酸亚铁铵滴定法测定铁矿石中钒含量方法的研究,对原国家标准GB/T6730.32—1986进行修订,新国标增加了碳酸钠一硼酸混合熔剂熔融分解试样,优化了指示剂校正和空白测定及铬干扰的消除方法,同时进行了精密度试验,用精密度(重复性限和再现性限)代替了原标准的允许差。 By improving the ammonium ferrous sulfate titrimetric method for the determination of vanadium content in iron ore based on the national standard GB/T 6730.32-1986, new method completed by adding mixed flux of NaCO3-H3BO3 for decomposition samples, optimize the indicator correction and blank measurement and chromium interference method of eliminating, simultaneously the precision test, with precision (repeatability limit and reproducibility limit) instead of allow difference in GB/T 6730.32-1986.
出处 《冶金标准化与质量》 2012年第1期6-9,27,共5页 Metallurgical Standardization & Quality
基金 课题来源:质检公益性行业科研专项资助课题(201010235)
关键词 铁矿石 钒含量 国家标准 研究 iron ore vanadium content national standard study
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  • 1刘素琴,桑玉,李林德,黄可龙.电位滴定法测定钒电池电解液中不同价态的钒[J].理化检验(化学分册),2007,43(12):1077-1078. 被引量:21
  • 2李传启.连续氧化还原滴定钢铁中铬钒的通用方法[J].冶金分析,2008,28(增):748-750.
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  • 6Kazuyuki Umetsu, Hideyuki Itabashi, Keiichi Saton, et al. Effect of ligands on the redox reaction of mtetal ions and the use of a ligand buffer for improving the end-point detection in the potentiometric titration of vanadium(Ⅴ) with Iron( Ⅱ )[J]. Analytical Sci- ences,1991, 7:115 -118.
  • 7Benarji T, Patrudu, Raju K V. Reductimetric deter ruination of vanadium(Ⅴ) with iron ( Ⅱ) in buffer medium and in presence of oxalate[J]. Der Pharma Chemica, 2011, 3(3) :277- 281.
  • 8邴桔,龚胜,龚竹青.从石煤中提取五氧化二钒的工艺研究[J].稀有金属,2007,31(5):670-676. 被引量:25
  • 9罗守宽.磷钨钼钒杂多酸光度法测定钒[J].冶金分析,1997,17(3):51-53. 被引量:3
  • 10李传启.硫酸亚铁铵滴定法快速测定钢铁中钒[J].冶金分析,2008,28(6):79-80. 被引量:10

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