Method for analyzing naphthalene compounds in fractions by using multi-dimensional gas chromatography system

The invention provides a method for analyzing naphthalene compounds in fractions by utilizing a multi-dimensional gas chromatography system, which comprises the following steps: S1, enabling a sample to be detected to enter a first chromatographic column through a sample inlet of the multi-dimensional gas chromatography system, and separating out the naphthalene compounds and other hydrocarbon compounds; under the control of the central cutting assembly, the naphthalene compound enters a second chromatographic column and then enters a first detector for analysis, and a sample detection map is obtained; s2, qualitative analysis; and S3, quantitative analysis. According to the method, the monomer content of 15 naphthalene compounds in the fraction can be obtained at the same time through one-time direct sample injection, especially the dimethyl naphthalene compounds can be separated, and the method is simple, reliable and high in repeatability. 本发明提供了一种利用多维气相色谱系统分析馏分中萘类化合物的方法，该方法包括如下步骤：S1：使待测样品经所述多维气相色谱系统分的进样口进