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发射光谱照象测光定量分析中,叠加在分析线对上的所谓“背景”不能忽略时,需要进行扣除背景的分析手续,以提高分析的精确度。在听见的光谱分析文献中,都是利用强度修正法扣除背景,即用[lgC,lg Ι_Ω/Ι_ο]作为校准曲线的参数(其中,C 是元素相应的百分含量,Ι_Ω和Ι_ο是分析线和内标线的强度)。但这种方法具有以下缺点:1.这种扣除背景的方法显得耗时过多,难以满足分析迅速的要求;且由于手续烦琐,易在传递过程中产生误差,降低分析结果的精确度。2.由黑度值(S)换求相应的强度值(I)时,如果
Emission spectrophotometric photometric quantitative analysis, superimposed on the analysis of the line on the so-called “background ” can not be ignored, the background analysis procedures need to be deduced to improve the accuracy of the analysis. In the spectral analysis of the hearing literature, the intensity correction method is used to subtract the background, that is, [lgC, lg Ι_Ω / Ι_ο] is used as a calibration curve parameter (where C is the corresponding percentage of elements, I_Ω and Ι_ο are analysis lines And internal standard line intensity). However, this method has the following disadvantages: 1. This background subtraction method takes too much time and can not meet the rapid analysis requirements; and because of the cumbersome procedures, it is easy to produce errors in the transmission process and reduce the accuracy of the analysis results. 2. From the black value (S) for the corresponding value of the intensity (I), if