不同产地当归、党参红外光谱指纹图谱及重金属含量测定研究

Study on Infrared Spectral Fingerprint and Content Determination of Heavy Metal of Dangshen( Radix Codonopsis) and Danggui( Radix Angelica sinensis) from Different Regions

目的:对甘肃云南等不同产地当归、党参样品的质量进行评价。方法:通过红外光谱分析法建立不同药材样品的指纹图谱,采用电感耦合等离子体原子发射光谱法(ICP-AES)测定镉、锡的含量,原子荧光法(AFS)测定汞、砷和铅的含量。结果:各地当归药材的相似度均在99%以上,党参药材相似度在97%以上,说明不同产地当归、党参药材的主要化学特征极为相似。本实验收集的16份当归药材样品与14分党参药材样品中的重金属含量均符合相关限量规定。结论:当归、党参的质量与其种植环境紧密相关,海拔高度、地域、种植土壤及气候条件越相似,药材的化学特征越接近,因此在当归、党参的选购与使用中,应注意保持其来源的一致性。

Objective： To evaluate the quality of Danggui（ Radix Angelica sinensis） and Dangshen（ Radix Codonopsis）in Gansu,Yunnan and other regions. Methods： Through the method of infrared spectrum analysis method to establish the fingerprint of different samples. By using inductively coupled plasma atomic emission spectrometry（ ICP- AES） to determine cadmium and tin and atomic fluorescence spectrometry（ AFS） to determine mercury,arsenic and lead. Results： The similarity results of Danggui（ Radix Angelica sinensis） were above 99% and the similarity of Dangshen（ Radix Codonopsis） was above 97%,indicating that the main chemical characteristics of Dangshen（ Radix Codonopsis） and Danggui（ Radix Angelica sinensis） from different regions are very similar. The contents of heavy metals in 16 samples of Danggui（ Radix Angelica sinensis） collected in this experiment were in accordance with those of 14 samples of Dangshen（ Radix Codonopsis）. Conclusion： Danggui（ Radix Angelica sinensis） and Dangshen（ Radix Codonopsis） and its quality are closely related to the growing environment. The more similar altitude,geographical and climatic conditions and planting soil chemical characteristics are,the more close the features of the two drugs,so when choosing the drugs,we should pay attention to the source.