煤系重质油的仪器分析及系统考察Ⅱ.高效液相色谱法分析芳烃环分布

以高效液相色谱（ＨＰＬＣ）、氨基柱／庚烷色谱体系，对４９个芳烃纯样的色谱保留指数（Ｉ）和芳环数（ＡＲＮ）的关系进行了研究。所获结果表明，ＡＲＮ和ｌｏｇＩ值间遵循着严格的划分规律。其中，一环芳烃的ｌｏｇＩ为０．６７２～１．０８９，二环为１．６５２～２．５８６，三环为２．６２９～３．２４１，四环为３．４４７～４．１６０，五环为４．４８２～５．０００。在研究模型化合物的基础上，建立了芳烃环分布（ＡＲＤ）的测定方法。运用该法对煤系重质油中的ＡＲＤ进行了系统考察。

Instrumental analysis and systematic investigation on heavy oils from coal. II. Analysis of aromatic ring distribution by high performance liquid chromatography]

In this paper, the relationship of chromatographic retention index (I) and aromatic ring number (ARN) of 49 pure reagents in Zorbax-NH2 column/hepatane chromatographic system using high performance liquid chromatography(HPLC) have been studied. The results obtained were that log I values can be divided into several regions according to ARN. They were 0.672-1.089, 1.652-2.588, 2.629-3.241, 3.447-4.160 and 4.482-5.000 for ARN 1 through 5. Those were clear-cut and could be applied to the division of aromatic ring distribution (ARD) of heavy oil products. Hence the ARD method, which was based on the results from pure synthetic compounds, has been established. On the study of quantitation, the peak-area normalization method was used to quantify the aromatics with different ARN. The method has the features of high rapidity, high resolution and long life of column. In this paper heavy oil and pitch products from seven plants have been systematically analyzed for their ARD.