MPT=AES测定镍基合金中的铁

摘要

The determination of iron in the niekel base alloy by mierowave plasma toreh( MPT)-atomie e-mission speetrometry( AES)method was studied. The seleetion of instrument working eonditions,the effeets of aeidity and the interferenee of eoexisting ions were investigated,using the matrix matehing meth-od to eliminate the matrix interferenee. Determination of iron linear range was 0. 01 ~ 100μg/mL,detee-tion limits were 18. 96 ng/mL,RSD(n = 11)was 3. 65%. The determination result of MPT-AES is eon-sistent with the national standard method,the method is aeeurate,simple and fast,suitable for the niekel base alloy of iron element analysis determination.%用微波等离子体炬（ MPT）-原子发射光谱（ AES）测定镍基合金中的铁含量，考察了仪器工作条件、酸度影响和共存离子的干扰，使用基体匹配法消除基体干扰。结果表明，测定铁的线性范围为0.01~100μg/mL，检出限为18.96 ng/mL，RSD（n=11）为3.65%。方法测定结果与国家标准方法测定结果相符合，方法具有准确、简便、快速的特点，适用于镍基合金中铁元素的分析测定。