摘要
提出用原子吸收光谱测定锡的新方法。使用空气－氧气火焰比用空气－乙炔火焰测锡的灵敏度提高了６倍，检测限达０．２３４μｇ／ｍｌ。考察了４种无机酸和２２种金属离子的干扰情况，试验表明加入三氯化铁可以消除多数金属离子的干扰。平行测定８份试样的相对标准偏差为１．８３％，分析结果用三种不同的分析方法进行了验证。本文为低含量锡的测定提供了新方法。
A new method for determining low tin content in reforming catalyst is proposed.Thesensitivity of air-H_2 flame is six times higher than that of air-C_2H_2 flame AAS, with adetection limit of 0.234 μg/ml. The interference conditions of four kinds of inorganic acidsand twenty-two metallic ions are inspected; most metallic interferences can be eliminated byferric chloride. The relative standard deviation of parallel determination on eight salnples is1.83%;analytical results are checked by three different analytical methods.
出处
《石油化工》
CAS
CSCD
北大核心
1995年第6期422-425,共4页
Petrochemical Technology
