微波消解ICP-MS法测定西藏冬虫夏草中的微量元素  

Determination of Elements in Ophiocordyceps sinensis from Tibet by ICP- MS with Microwave Digestion

作　　者：潘清灵[1] 代安国[2] 熊卫萍[2] 洛桑[2] 白玛旦增[2] 谢荣[2] 章卫民[1] 

机构地区：[1]广东省微生物研究所,省部共建华南应用微生物重点实验室,广东省菌种保藏与应用重点实验室,广东省微生物应用新技术公共实验室,广东广州510070 [2]西藏农牧科学院蔬菜研究所,西藏拉萨850000

出　　处：《中国民族民间医药》2014年第8期33-35,38,共4页Chinese Journal of Ethnomedicine and Ethnopharmacy

基　　金：国家科技支撑计划项目(2007BAI32BO2);国家自然科学基金项目(30870450)

摘　　要：目的:分析和比较22个西藏不同地区冬虫夏草样品中的微量元素含量。方法:采用浓硝酸-双氧水消解冬虫夏草样品,电感耦合等离子体质谱(ICP-MS)测定样品中钾、钠、钙、镁、铝、铁、铜、锌、锰、铬、镉、铅等12种微量元素。结果:对人体有益的钾、钠、钙、镁、铝、铁等元素含量均较为丰富,其中钾元素含量最为丰富;有9个样品的铅含量不同程度地超出了药用植物及制剂进出口绿色行业标准的限量标准。结论:不同冬虫夏草样品中的微量元素含量存在不同程度的差异,研究结果为西藏不同地区冬虫夏草的质量评价和控制提供参考。Objective：To analyze and compare the contents of trace elements in 22 Ophiocordyceps sinesis samples collected from different districts of Tibet.Method：Samples were digested with concentrated nitric acid and hydrogen peroxide,the contents of K,Na, Ca,Mg,Al,Fe,Cu,Zn,Mn,Cr,Cd and Pb in O.sinesis were determined by ICP-MS.Results：All samples are rich in the trace elements beneficial to human body such as K,Na,Ca,Mg,Al,Fe,among which K is the richest.And the contents of Pb in 9 sam-ples were more or less higher than the limits of Chinese Pharmacopoeia and Green Trade Standard for Importing and Exporting Medici-nal Plant and Preparation.Conclusion：The contents of trace elements vary in differrent degrees among differrent O.sinesis samples, which will provide a reference for quality evaluation and control of O.sinensis from different districts of Tibet.

关 键 词：冬虫夏草 西藏 微量元素 微波消解 电感耦合等离子体质谱(ICP—MS) 

分 类 号：R284.1[医药卫生—中药学]