摘要
1983年Slavin等提出了“特征质量”(m_0)的概念,即产生0.0044 A.s积分吸光度信号时所对应的待测元素量,用pg表示。目前,特征质量已被用为石墨炉原子吸收绝对分析(或无标样分析)的定量基准,其理论计算也受到人们的重视。L’vov等提出了计算稳定温度平台炉(STPF)中待测元素特征质量的理论模型,但未涉及因塞曼效应引起谱线分裂所带来的影响。本文将在L’vov模型的基础上,综合考虑多普勒增宽、压致增宽、超精细结构和塞曼分裂对吸收谱线轮廓的影响,结合光源发射线轮廓,建立计算塞曼石墨炉原子吸收分析中特征质量的通用方法,并将计算结果与管壁原子化实验值相比较。
This paper describes a general method for the calculation of characterictic mass, m_0. It is based on the L'vov model but taking into account of the comprehensive effects of Doppler broadening, Lorentzian broadening, hyperfine splitting and Zeeman splitting in the absorption line, since the experimental data were obtained from a Zeeman atomic absorption spectrometer. The calculated and the experimental m_0 of Cd, Co, Cr, Cu, Pb, V and Zn are compared. Except for volatile elements, Cd, Pb and Zn, the calculated and the experimental m_0 agree very well.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1991年第3期40-44,共5页
Spectroscopy and Spectral Analysis
