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前言近年来,分部曝光法光谱分析受到光谱分析工作者的普遍重视。假如金属或合金样品,经过足够预燃之后,分析线及内标线的强度分别达到稳定,且在谱片上的线对黑度又落在乳剂特性曲线的直线部位,则此线对在单位时间内,在感光板上作用产生的黑度差值(ΔS)将是相等的。在这种实验条件下,在同一感光板上采用 t、(2/3)t、(1/3)t 等曝光时间进行摄谱,就能获得与分析线黑度相对应的 C、(2/3)C、(1/3)C 等含量。用每阶谱的分析线黑度与第一阶谱(即曝光时间为 t 者)的内标线黑度之
Preface In recent years, the spectral analysis of the sub-division exposure method has been widely valued by spectral analysis workers. If the metal or alloy samples, after sufficient pre-combustion, the analytical line and the internal standard line intensity were stabilized, and the line on the spectrum of blackness and fell on the straight line of the emulsion characteristic curve, the line on the unit time , The difference in blackness (ΔS) produced by the action on the plate will be equal. Under these experimental conditions, the exposure times of t, (2/3) t, (1/3) t and the like on the same plate are used to obtain the spectra corresponding to the blackness of the analysis line (2 / 3) C, (1/3) C and other content. With each spectrum analysis line blackness and the first order (ie exposure time is t) internal standard blackness