不同产地雪莲花中重金属含量分析

雪莲花是一种名贵的藏药,也是青藏高原最受国内外游客青睐的土特产之一。雪莲花作为一种药用植物,其中有毒有害的重金属含量也是广大消费者关注的问题之一,更是该药材出口销售的绿色标准指标之一。本研究采用ICP-MS和氢化发生—AFS法,对西藏拉萨市场内来自西藏、青海和新疆3个产地的雪莲花样品进行了重金属含量分析。结果表明：①3个产地中西藏雪莲花重金属含量较高,青海次之,新疆最低;②雪莲花药材重金属含量由高到低的顺序为：Cr〉As〉Pb〉Cd〉Hg,按照《药用植物及制剂进出口绿色行业标准》,重金属As超标较明显。

Analysis of Heavy Metal Content in Snow lotus from Different Areas

The snow lotus is one of the famous and precious Tibetan medicinal herbs and is regarded as a localspecial products of the Tibetan Plateau by the domestic and foreign tourists. Snow lotus as a medicinal plant, it isa part of problems that consumers take attention on toxic and harmful heavy metals in it. heavy metal content ofsnow lotus collected in Lhasa market were analyzed by ICP-MS and AFS and made a comparison of heavy metalcontent in snow lotus produced from different places of origin. The results showed that snow lotus from Tibet hashigher heavy metal content than that of snow lotus from Qinghai and Xinjiang, and lotus from Xinjiang has thelowest heavy metal content; the order of metal content in snow lotus is Cr＆gt;As＆gt;Pb＆gt;Cd＆gt;Hg, and according to《Green Trade Standards of Importing Exporting Medicinal plants Preparations》, the heavy metal of As obviouslyexceeded in snow lotus.