电感耦合等离子体原子发射光谱法测定锌铝合金中锡铅铁

提出了一种简单、快速和可靠的同时测定锌铝合金中锡、铅、铁的方法。用硝酸溶样后在1%(体积分数)硝酸介质中,以Sn 189.989 nm、Pb 220.353 nm和Fe 259.940 nm作分析线,用电感耦合等离子体原子发射光谱法(ICP-AES)测定。锡、铅和铁的检出限分别为0.02 μg/mL、0.03 μg/mL和0.002 μg/mL,样品中锡的加标回收率为100%,铅和铁的加标回收率均为110%。方法应用于锌铝合金中锡、铅和铁测定,测定值与国家标准方法的测定值一致,相对标准偏差分别为0.0%,3.0%和6.4%。

Determination of tin,lead and iron in zinc-aluminum alloy by inductively coupled plasma atomic emission spectrometry

A simple, rapid and reliable method for the simultaneous determination of tin, lead and iron in zinc-aluminum alloy was proposed. The sample was dissolved with nitric acid. Then, the content of tin, lead and iron was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) in 1% (volume fraction) nitric acid medium using Sn 189.989 nm, Pb 220.353 nm and Fe 259.940 nm as analysis lines. The detection limit for tin, lead and iron was 0.02 μg/mL. 0.03 μg/mL and 0.002 μg/mL, respectively. The recoveries of standard addition were 100% for tin and 110% for lead and iron. The proposed method was applied to the determination of tin, lead and iron in zinc-aluminum alloy. The found results were consistent with those obtained by national standard method. The relative standard deviation (RSD) was 0.0%, 3.0% and 6.4%, respectively.