火焰原子吸收光谱法测定钯材料中铁铅铋

Determination of iron,lead and bismuth in palladium material by flame atomic absorption spectrometry

运用火焰原子吸收光谱法快速测定钯材料中铁、铅、铋的含量，当铁、铅、铋的共振线分别为在248．3nm、217．0nm、223．1nm时，方法检出限分别为0．005mg／L、0．008mg／L、0．006mg／L。确立了燃烧器高度、酸性介质等最佳实验条件，并讨论了电离干扰及其消除、共存离子的干扰允许量等。方法用于钯材料中铁、铅、铋的测定，相对标准偏差均小于1．0％（n=6），标准加入回收率均在97％～99％范围内。本方法适用于生产现场控制分析和样品系统分析。

The contents of iron, lead and bismuth in palladium material flame atomic absorption spectrometry. When the resonance lines of iron 248.3 nm, 217.0 nm and 223.1 nm, the detection limits were 0. 005 mg mg/L, respectively. The optimal experimental conditions like burner heig were rapidly determined by , lead and bismuth were at /L, 0. 008 mg/L and 0. 006 ht and acid medium were investigated. The ionization interference and its elimination, and the allowable amounts of coexisting ions were discussed. This method was applied to the determination of iron, lead and bismuth in palladium material, and the relative standard deviations （RSD） were all lower than 1.0 % （n=6）. The recoveries were in the range of 97 % --99 %. This method was applicable for the control analysis and sample system analysis in production field.