无汞自动电位滴定法测定全铁

Determination of TFe by Mercury-Free Automatic Potentiometric Titration

将无汞法与自动电位滴定相结合,用于岩矿样中全铁的测定,分析结果与GB6730.4-81方法的结果相符。采用本方法对国家一级标准物质中全铁做了准确度、精密度试验,分析结果误差均在合理允差范围内,该法准确度高、精密度高、简便、快速,适合大批样品分析。

This paper introduces a method for the determination of total iron in Fe ores by Hg-free auto-potentiometric titrimetry. The results are in agreement with those from GB6730.4-81 method. The method has been applied to the determination of national standard reference materials. Results indicate that it has high accuracy and precision and the error can be controlled within the chemical analysis standard. The method is simple, reliable and fast for the determination of lots samples.