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在假设不同环数芳环上取代度或取代基数相等的基础上，由Ｈ－ＮＭＲ数据，推导出芳环分布计算式．采用模型混合物验证不同环数芳环质子类型谱带归属，然后估计出四种Ａｌｂｅｒｔａ沥青质芳环分布．结果表明，不同取代基数的假设，不会引起芳环分布估计的较大误差；Ａｌｂｅｒｔａ沥青质稠环芳烃含量不高，与传统对沥青质中稠环芳烃含量估计相差甚大．
Based on the H-NMR data, the calculation formula of the aromatic ring distribution was deduced on the assumption that the degree of substitution or the number of substituents on aromatic rings of different rings was equal. The model mixtures were used to verify the attribution of bands of aromatic ring protons of different ring numbers, and then four Alberta asphaltene aromatic ring distributions were estimated. The results show that the assumptions of the number of different substituents will not cause large errors in the estimation of the aromatic ring distribution. The content of PAHs in Alberta asphaltene is not high, which is quite different from the traditional estimation of PAHs in asphaltenes.