苦丁茶红外指纹图谱共有峰率和变异峰率双指标序列分析法

利用共有峰率和变异峰率两个指标，以不同苦丁茶样品的红外指纹图谱为标准，计算出所测样品相对于标准品的共有峰率和变异峰率。按照共有峰率的大小，建立了不同的共有峰率和变异峰率双指标序列方法。该方法可以准确地区分不同产地和不同级别的苦丁茶，可以对两个或多个中药样品进行方便可靠的鉴别，是一种符合中药自身特点的光谱指纹图谱分析方法。

Common and Variant Peak Ratios in IR Fingerprint of Ilex Kudingcha with Duel-Index Sequence Analysis

In the present article, two new indexes, common peak ratio and variant peak ratio, were applied and their values were calculated by means of sequential analysis, in which each Ilex Kudingcha sample s IR fingerprint spectra were set up and the common peak ratio sequences were arranged in order of size in comparision with other samples. As a result, the method could be used to distinguish Ilex Kudingcha of different areas and classes. The duel-index sequential analysis enables us to distinct two or more herb's IR fingerprints. It is a new method to analyze IR fingerprint spectra, and can used in line with the characteristics of traditional Chinese medicine.