[Objective] It is very important to analysis metal trace accurately for the development of safe cigarettes with minor metal toxicity.[Method] The trace Cu,Zn,Pb,Cd,Fe,Mn,Ni,Cr,As and B in tobacco were analyzed by Inductively Coupled Plasma-oa time of flightMass Spectrometry (ICP-oaTOF-MS).Factors affecting the determination were analyzed in detail.The optimum condition for the determination was obtained.[Result] The limits of determination were Cu 0.090 μg/L,Zn 0.130 μg/L,Pb 0.083 μg/L,Cd 0.090 μg/L,Fe O.093 μg/L,Mn O.116 μg/L,Ni 0.097 μg/L,Cr 0.090 μg/L,As 0.144 μg/L,B 0.182 μg/L,respectively.The recycling rates ranged from 90.67％ to 108.52％.The relative standard deviation (RSD) was less than 5％.[Conclusion] Compared with other methods,this method is a simple fast and accurate high sensitivity.Especially for some low concentration of 10-9g/L of the components of the level of trace detection,however,the abundance sensitivity,high-quality end of the worse.So that it can be used in the heavy metal detection and quality control for tobacco.%[目的]准确测定烟草中的重金属元素,对开发低毒安全烟具有重要意义.[方法]研究采用微波密闭消解-电感耦合等离子体直角加速飞行时间质谱(ICP-oaTOF-MS)法分析了进出口卷烟中Cu、Zn、Pb、Cd、Fe、Mn、Ni、Cr、As、B 10种元素,较详细地研究了影响其测量的主要因素,确定了最佳测定条件.[结果]17种进出口卷烟中各金属元素的检出限分别为:Cu 0.090 g/L、Zn 0.130 μg/L、Pb0.083 μg/L、Cd 0.090 μg/L、Fe 0.093 μg/L、Mn 0.116 μg/L、Ni 0.097 μg/L、Cr 0.090 μg/L、As 0.144 μg/L、B 0.182 μg/L,回收率90.67％ ～ 108.52％,相对标准差(RSD)低于5％.[结论]相比于其他方法,该研究所建立的方法具有简便、快速、准确、灵敏度高、检测限低等优点,特别是对一些浓度低达10-9g/L级的超痕量组分的检测,但高质量的丰度灵敏度要差一些,可用于烟叶重金属的检测及质量控制.
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机译：微波消解-电感耦合等离子体质谱法测定怀牛膝中重金属元素含量Determination on Heavy Metals Content of Achyranthes bidentata Blume. through Inductively Coupled Plasma Mass Spectrometry (ICP-MS)
