GFAAS中理论原子化效率与原子化温度的关系的研究  

Ralation between Theoretical Atomization Efficiency and Atomization Temperature in GFAAS

作　　者：李攻科[1] 杨秀环[1] 张展霞[1] 

机构地区：[1]中山大学化学系,广州510275

出　　处：《光谱学与光谱分析》2000年第1期76-78,共3页Spectroscopy and Spectral Analysis

摘　　要：本文在有效地控制和消除基体干扰的基础上 ,探讨了Ag ,As,Au ,Bi,Cd ,Co ,Cr,Cu ,Fe ,Ga,Hg ,Mn ,Mo ,Ni,Sb ,Pb和V元素的理论原子化效率与原子化温度的关系。研究表明 :元素的理论原子化效率是原子化温度的函数 ,在一定的原子化温度范围内 ,理论原子化效率与原子化温度呈线性递增关系 ,对研究的十八个元素其线性的相关系数在 0 994 0～ 0 9993之间 ,且斜率大部分在 0 0 6～ 0 0 7之间 ,说明在一定的原子化温度范围内 ,理论原子化效率随原子化温度变化的斜率是相近的。In this work,the relationship between the theoretical atomization efficiencies (E A′ ) and atomization temperature (T) in graphite furnace atomic absorption spectrometry (GFAAS) for 18 elements were studied in detail.The results showed that a linear relationship between the E A′  and the atomization temperature existed at a definite atomization temperature range.The correlation coefficient was within 0 994 0-0 999 3 for 18 elements.The slope was in the range of 0 06-0 07.The theoretical atomization efficiency was about 65% for all elements at optimized atomization temperature.This indicated that some factors should be taken into account in the L′vov modified model of characteristic mass.

关 键 词：原子吸收光谱法 原子化温度 原子化效率 

分 类 号：O657.31[理学—分析化学]