基于元素指纹图谱的西洋参产地判别研究  

Research on Origin Identification of American Ginseng Based on Element Fingerprint

作　　者：王哲 张春华[2] 黄晓兰[2] 吴惠勤[2] WANG Zhe;ZHANG Chun-hua;HUANG Xiao-lan;WU Hui-qin(Guangzhou Institute of Chemistry,Chinese Academy of Science,Guangzhou 510650,China;Guangdong Provincial Public Laboratory of Analysis and Testing Technology,China National Analytical Center(Guangzhou),Guangzhou 510070,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院广州化学研究所,广东广州510650 [2]中国广州分析测试中心,广东省分析测试技术公共实验室,广东广州510070 [3]中国科学院大学,北京100049

出　　处：《质谱学报》2019年第6期525-537,共13页Journal of Chinese Mass Spectrometry Society

基　　金：广东省科学院发展专项资金项目(2019GDASYL-0105016)资助

摘　　要：以山东威海地区出产的西洋参为例,研究西洋参的地理特征,采用微波消解-电感耦合等离子体质谱法测定西洋参的元素组成,以数据转换为图形的方式建立西洋参的元素指纹图谱,直观地反映元素特征。通过元素指纹图谱比较不同产地西洋参的差别,用于判别西洋参产地。根据向量相似法计算指纹图谱之间的相似度均在0.9以上,表明所构建的元素指纹图谱具有一定的有效性,并确定元素指纹图谱的相似度阈值为0.93。采用该方法对22批西洋参样品进行产地判别,正确率为95.5%。In order to carry out research on the geographical characteristics of American ginseng,a method of inductively coupled plasma mass spectrometry(ICP-MS)combined with microwave digestion was established.The results showed that 50 inorganic elements in American ginseng had good linearity and correlation coefficients were all greater than 0.9994.The limits of detection(LODs)were in the range of 0.0006-8.6800μg/L.And the recoveries were between 85.53%and 116.27%.The national standard material of Astragalus membranaceus(GBW10028)was determined for 6 times in parallel.The measured values were all in the range of standard values apart from Zn,and the relative standard deviations(RSDs)of six times of measurements were 0.37%-19.64%.These data indicated that the accuracy and precision were reliable.According to the results of the measurement,the element fingerprints of 17 American ginseng samples produced in Weihai city,Shandong province were constructed by transforming data into graphics.And the standard element fingerprint was established by using the average element contents.The range of similarity degrees between the element fingerprints of 17 American ginseng samples and the standard element fingerprint were from 0.9253 to 0.9951,which were calculated by the vector similarity method.It showed that the established element fingerprints were feasible and the similarity threshold of American ginseng from Shandong province was defined as 0.93,and it was used to identify the origin of American ginseng.If the similarity degree between the element fingerprints of unknown American ginseng samples and the standard element fingerprint was higher than 0.93,the origin of unknown American ginseng would be regarded as Weihai city.22 batches of American ginseng samples of other origins were used for origin verification,the accuracy rate of origin discrimination was 95.5%.The results indicated that the element fingerprint could be used to identify the origin of American ginseng.This study revealed the abundant element information of A

关 键 词：西洋参 微波消解 电感耦合等离子体质谱法(ICP-MS) 指纹图谱 元素 产地判别 

分 类 号：O657.63[理学—分析化学]