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本文报道的背景校正方法,利用了测量锐线光源辐射谱线轮廓上不同波长位置相应的吸收系数进行背景校正,是作者在利用LPDA作为光电检测系统进行AA研究工作中提出来的。文章论述了方法的基本原理和作者所做的实验研究,7个元素的实验数据证明了方法的正确性。利用这种方法还可以观察原子吸收线与原子发射线之间中心波长的位移现象。
The background correction method reported in this paper is based on the measurement of the corresponding absorption coefficient at different wavelength positions on the profile of the sharp line light source for background correction. It is proposed by the author in the AA research using LPDA as the photodetection system. The article discusses the basic principle of the method and the experimental research done by the author. The experimental data of seven elements prove the correctness of the method. By this method, it is also possible to observe the shift of the central wavelength between the atomic absorption line and the atomic emission line.