火焰原子发射光谱法测定钽粉中钾含量的研究  

Determination of Potassium in Tantalum Powder by Flame Atomic Emission Spectrometry

作　　者：张众 郝红梅 

机构地区：[1]宁夏东方钽业股份有限公司分析检测中心,宁夏石嘴山753000

出　　处：《稀有金属与硬质合金》2014年第5期65-67,共3页Rare Metals and Cemented Carbides

摘　　要：采用火焰原子发射光谱法测定钽粉样品中的钾含量,优化了火焰条件,确定了试剂用量。本方法在选定条件下对钽粉中钾含量的测定下限为2.375μg/g,加标回收率为93.5%-104.5%,相对标准偏差不大于7.31%;测定结果与国家标准分析方法（原子吸收光谱法）测定的结果无显著差异。Potassium content in tantalum powder was determined by flame atomic emission spectrometry, the flame conditions were optimized, and the reagent dosages were selected. The detection limit is 2. 375 μg/g of the above method for the potassium content in tantalum powder under the selected conditions,its standard addition recovery rate is 94.0%- 104.5%, and the relative standard derivation is not more than 7.31%. There is no significant difference on analytical results between the above method and the national standard analytical method of atomic absorption spectrometry.

关 键 词：钾含量 钽粉 火焰原子发射光谱法 

分 类 号：O657.31[理学—分析化学]