吸光光度分析方法の検量線の管理

概要

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The principle of the absorptiometric analysis depends on the fact that the optical characteristics of sample solution obeys the Lambert-Beer's law. The gradient of calibration curve, according to the law is constant under the same analytical condition. In the ordinary analysis, the average gradient of calibration curve, which was obtained with the empirically and theoretically reliable measures, was defined as the basic gradient, and the straight line drawn through the origin with the basic gradient was named as the basic calibration curve here. The average blank value of each day, gained by the analysis of standard samples, was subtracted from absorbances of test samples and then the contents were read on the basic calibration curve. By applying this method to the analyses of Si, P, Ni, Mo, W, Ti, Co, and Cu, the daily deviation of gradient was eliminated and the better analytical precision was obtained. With a statistical treatment of data on standard samples it was easily capable of checking out the abnormal point on the daily process of analysis and ascertaining the stability of calibration curve during a long period.
社団法人日本鉄鋼協会の論文
1971-05-01