原子吸收用于常量分析时,常采用插入法来进行结果处理。本文在此基础上介绍三点回归处理方法。以测定常量Zn为例,在选定仪器工作条件下,取预先配制好的一系列标准溶液,含Zn5、10、15、20、25、30、35、40μg/ml和已制好的含Zn试液,先在原子吸收光度 Atomic absorption for constant analysis, often used to deal with the results of interpolation. On this basis, this article introduces three-point regression approach. Taking the determination of the constant Zn as an example, a series of standard solutions prepared in advance under the working conditions of selected instruments, containing Zn5,10,15,20,25,30,35,40μg / ml and prepared Zn Test solution, first in atomic absorption luminosity