为了进一步提高原子吸收分析的测量准确度和加快分析速度,当前我国生产的原子吸收仪中已广泛配置了对数转换及标尺扩展装置。但是,由于种种因素造成分析工作曲线往往从低浓度时就发生弯曲,为此还必须对弯曲的工作曲线进行校直。本文就原子吸收分析中造成工作曲线弯曲的原因以及目前已采用的校直办法进行初步的讨论。 In order to further improve the measurement accuracy of atomic absorption spectrometry and speed up the analysis, logarithmic conversion and scale expansion devices have been widely deployed in China’s atomic absorption spectrometer. However, due to various factors, the analytical working curve tends to be bent from a low concentration. Therefore, it is also necessary to calibrate the curved working curve. In this paper, the reasons for the bending of the working curve caused by atomic absorption analysis and the straightening methods that have been adopted so far are tentatively discussed.