摘要
用盐酸溶解样品 ,火焰原子吸收光谱法测定四氧化三锰中铁、钙、镁、钾、钠 ,石墨炉原子吸收光谱法测定其中的铬。对测定条件进行了试验 ,找出了最佳溶样方法和酸度 ,并对共存元素的干扰及排除进行试验 ,获得了满意的效果。该法简便、快速、准确 ,样加标回收率为 98.6%～ 1 0 9.6%之间 ,相对标准偏差为 1 .61 %～ 4.96%之间 ,倍比实验、标准曲线法和标准加入法结果相吻合 ,适用于四氧化三锰样品中铁、钙、镁、钾、钠、铬元素的分析。
Fe,Ca,Mg,K,Na in Mn 3O 4 product were determined by flame atomic absorption spectrometry, and chromium was determined by GFAAS after dissolving the sample with HCl(aq). The optimized conditions for the determination were investigated including method of dissolving and acidity, and influence of coexisting elements and exclusion of these influences. This method is rapid, accurate, and convenient. The recovery is 98.6%-109.6%, standard deviation 1.61%-4.96%. The result obtained by calibration curve method is in good conformity with the standard addition method and the double ratio experiments and method can be utilized in analysis of Fe, Ca, Mg, K, Na, Cr in Mn 3O 4 product.
出处
《化学世界》
CAS
CSCD
2000年第8期438-441,435,共5页
Chemical World
基金
湖南省教委自然科学基金!项目 ( 99C69)
关键词
四氧化三锰
原子吸收光谱法
杂质元素分析
Trimanganese tetroxide
AAS
iron
calcium
magnesium
chromium
potassium
sodium
