原子吸收光谱分析中石墨炉的原子化效率  

Atomization Efficiency of Graphite Furnace in Atomic Absorption Spectrometry

作　　者：衷明华[1] 郑衍生[1] 

机构地区：[1]江西师范大学化学与生物科学学院,江西南昌330027

出　　处：《光谱学与光谱分析》2002年第1期135-138,共4页Spectroscopy and Spectral Analysis

摘　　要：本文评述了原子吸收光谱分析中石墨炉原子化效率的研究进展 ,叙述了基础理论、各种原子化效率公式以及 βm ,βi(exp) ,βi(cal)间的关系 。In this paper, the advance of study of atomization efficiency for graphite furnace atomic absorption spectrometry was reviewed. The fundamental theory and the various calculated equations of atomization efficiency, as well the relationship among g., beta(i) (exp) and beta(i) (cal) were described. Problem requireing further improvement in the investigation of atomization efficiency of graphite furnace atomic absorption spectrometry were discussed. Peak area atomization efficiency is more practical than peak height. Because the mean residence time (tau(R)) of atoms in the furnace is larger than tau(D)(tau(D) = iota(2) /8D, iota is the tube length and D is the diffusion coefficient), calculated peak area atomization efficiency in the furnace is Larger than experimental. Part of the atomization efficiency is affected by atomic loss mechanism. An important aspect of researching atomization efficiency is conducted mainly to improve the sensitivity and limit of detection of the analysis method.

关 键 词：原子化效率 石墨炉 原子吸收系数 原子停留时间 原子吸收光谱 

分 类 号：O657.31[理学—分析化学]