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傅里叶变换红外线（ＦＴ－ＩＲ）光谱技术是一种新的测定原油组分特性，尤其是测定混层原油或管输产品组分特征的定量／定性分析方法，并与常用的其它分析方法如气相色谱法、气相色谱－质谱法、凝胶渗透色谱法和液相色谱法进行了分析和比较。经比较可知，ＦＴ－ＩＲ光谱法具有分析程序简单、耗时短及测定结果比较精确（原油混合物组分体积百分比的最大绝对误差等于或小于２％）等优点，即使油混合物或管输产品的组分差异相当小，使用这种新方法仍可获得令人满意的分析结果。ＦＴ－ＩＲ光谱新技术使用的ＩＲ光谱带宽在３１５０－２７５０ｃｍ－１之间，可提供明显的形状直接与原油组分组成特征有关的油“指纹”。同时，举例说明用凝析油、挥发油和黑油组成的不同数量的油混合物对ＦＴ－ＩＲ光谱法进行试验验证，进一步论证了其在测定混层原油混合物组分特征方面的有效性。
Fourier transform infrared (FT-IR) spectroscopy is a new quantitative / qualitative method for the determination of crude oil components, especially for the determination of the components of mixed crude oil or pipe products. Compared with other commonly used analytical methods Such as gas chromatography, gas chromatography - mass spectrometry, gel permeation chromatography and liquid chromatography were analyzed and compared. By comparison, FT-IR spectroscopy has the advantages of simple analysis procedure, short time-consuming and accurate determination results (the maximum absolute error of the volume fraction of crude oil mixture is equal to or less than 2%), even if the oil mixture The difference in composition is quite small, and satisfactory results can still be obtained using this new method. The new FT-IR spectroscopy uses an IR spectral bandwidth between 3150 and 2750 cm-1 and provides an appreciable oil “fingerprint” of shape that directly correlates with the composition of the crude oil component. At the same time, the experimental verification of FT-IR spectroscopy by using different amounts of oil blends composed of condensate, volatile oil and black oil illustrates the effectiveness of FT-IR spectroscopy in determining the compositional characteristics of the mixed crude oil mixture.