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近年来紅外光譜定量分析法已逐漸推广应用到各工业部門。由于工业分析要求設备簡单,操作迅速,并能达到一定的准确程度,因而常使用特殊的操作及計算方法。对于二元系統成分的測定早已开始应用标准溶液法,就是将被測定的二元混合物在一定条件下所摄得的光譜图和不同成分的标准溶液在同样条件下所摄得的光譜图直接加以比較。此法实貭上是假定在下式中液层厚度ι及頻率ν处之入射光强度ι_(0ν)为常值,而根据通过混合物后在該频率处之光强度ι_ν求其中一个組分(組分A或組分B)在混合物中之浓度C。
In recent years, quantitative analysis of infrared spectroscopy has been gradually applied to various industrial sectors. Industrial analysis often requires the use of special operations and calculations because it requires equipment that is simple, quick to operate, and achieves a degree of accuracy. For the determination of binary system components have already begun to use standard solution method, is to be measured binary mixture under certain conditions, the spectra obtained and standard solutions of different compositions obtained under the same conditions directly to the spectrogram Compare This method is based on the assumption that the liquid layer thickness ι and frequency ν at the incident light intensity ι_ (0ν) is a constant value in the following formula, and according to the mixture of light intensity at this frequency ι_ν seeking one of the components (group Part A or Part B) Concentration C in the mixture.