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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。
Snow lotus is a precious Tibetan medicine, but also one of the most popular natives in the Tibetan Plateau. Snow lotus as a medicinal plant, toxic and harmful heavy metal content is also one of the concerns of consumers, it is one of the green standard indicators of the export sales of medicinal herbs. In this study, ICP-MS and hydrogenation-AFS method were used to analyze the contents of heavy metals in snow lotus samples from three producing areas in Tibet, Qinghai and Xinjiang in Lhasa, Tibet. The results showed that: (1) The content of heavy metals in the snow lotus in the middle three regions of Tibet was higher than that in Qinghai and the lowest in Xinjiang; (2) The sequence of descending order of heavy metals in the snow lotus was Cr> As> Pb> Cd> Hg, Import and export of plants and preparations green industry standards ", heavy metal As exceeded more obvious.