电感耦合等离子体原子发射光谱法测定防锈铝合金中痕量钠

ICP-AES Determination of Trace Amounts of Sodium in Anticorrosive Aluminum Alloy

摘要: 提出了电感耦合等离子体原子发射光谱法测定防锈铝合金中痕量钠的方法。以盐酸(1+1)溶液和过氧化氢溶解样品,选择波长588.995 nm为钠的分析线。方法的检出限(3S/N)为0.028 mg·L-1。方法用于测定防锈铝合金中痕量钠(wNa=0.000 14%~0.000 73%),加标回收率在91.4%~113.3%之间,相对标准偏差(n=6)在2.6%~5.5%之间。

Abstract: An ICP-AES method for the determination of sodium in anticorrosive aluminum alloy was proposed. The sample was dissolved with HCl(1+1) and H2O2. The wavelength of 588.995 nm was selected as analytical line for the determination of sodium. Detection limit (3S/N) of the method found was 0.028 mg·L-1. The proposed method was applied to the analysis of trace amounts of sodium in anticorrosive aluminum alloy (wNa=0.000 14%-0.000 73%), giving values of recovery obtained by standard addition method in the range of 91.4%-113.3% and RSD′s (n=6) in the range of 2.6%-5.5%.