铝在乙炔火焰原子吸收光谱分析上的干扰效应 1.考察铝对贵金属的干扰

THE INTERFERENCE EFFECT OF Al IN FAAS Ⅰ.THE INTERFERENCE EFFECTS OF Al ON NOBLE METALS SUCH As Ag,Au,Ir,Pd,Pt AND Rh

一、前言贵金属在催化领域用处极为广泛,大多数贵金属在催化剂中都是主要的活性成分。特别是以可溶性氧化铝为担体的催化剂种类繁多。我们在前一篇文章中提到:金属铂担在γ-氧化铝,η-氧化铝上,用王水分解样品时,氧化铝也同时被溶解。实验证明铝的存在对铂的测定产生干扰。其干扰程度随铝的含量不同差别较大。基于这一实验事实,我们考察了铝对贵金属铂、铱、铑、钯、银。

The interference effects of Al on noble metals such as Ag, Au, Ir, Pd, Pt and Rh in FAAS are complicated and have not yet been investigated. We studied the interference effects caused by different amounts of Al and different ratios of Al to metals (Al/M) at different observation height (H=0.5—3.0cm) in details, ploted out the spatial interference profiles, and illustrated the influences of these interference effects on the working curves of each metal。