ICP-AES法分析镉镍电池正极物质——钙、镁、钡、铁四元素的测定

Analysis of positive material for Ni-Cd battery by means of ICP-AES ——Determination of Ca, Mg, Ba and Fe elements

介绍了电感耦合等离子体原子发射光谱法连续测定镉镍电池正极物质中Ca、Mg、Ba、Fe四元素。选定谱线Ca42 2 .673nm、Mg 2 85 .2 1 3nm、Ba 45 2 .493nm、Fe 2 5 8.5 88nm作为分析线 ,用类似样品组成的基体匹配抑制干扰 ,标准加入回收率为 99%～ 1 0 2 %。此法经回收试验证明有良好的准确性 ,且简便。

The analytical method for simultaneous determination of Ca, Mg, Ba and Fe elements in positive material for Ni-Cd battery by means of Inductively Coupled Plasma Atomic Emission Spectrometry were introduced. The spectral lines (Ca 422.673 nm, Mg 285.213 nm, Ba 452.493 nm, Fe 258.588 nm) were selected as the analytical lines. The matrix solution with matched components approximate to the samples was used to dispel interference. The recycling rate with the standard addition varies from 99%～102%. According to the recycling tests, this method is proved to be accurate, easy and quick.