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