通过实验检测和拟合处理为常规原子光谱信号建立了数学模型 .简要介绍了自制导数测量系统的结构与原理 ,进而导出了火焰原子吸收光谱、火焰原子发射光谱、冷原子吸收光谱、氢化物发生 -原子吸收光谱和流动注射 -火焰原子吸收光谱的导数信号之数学模型 .导数信号的强度与分析元素的浓度之间呈现良好的线性关系 .提出了导数原子光谱分析技术的理论基础 A mathematical model was established for conventional atomic spectroscopy signals through experimental detection and fitting processing. The structure and principle of self-made derivative measurement system were briefly introduced. Then flame atomic absorption spectrometry, flame atomic emission spectrometry, cold atomic absorption spectrometry, hydride generation - Atomic Absorption Spectroscopy and Flow Injection - A Mathematical Model of the Derivative Signal of Flame Atomic Absorption Spectroscopy A good linear relationship exists between the intensity of the derivative signal and the concentration of the analyte element. A theoretical basis of the derivative atomic spectroscopy technique