电感耦合等离子体质谱法测定再造烟叶中17种痕量元素

Simultaneous determination of 17 trace elements in reconstituted tobacco by inductively coupled plasma mass spectrometry

中文关键词:  再造烟叶  痕量元素  电感耦合等离子体质谱  微波消解

英文关键词:reconstituted tobacco  trace elements  inductively coupled plasma mass spectrometry  microwave digestion

中文摘要:

      目的 用微波消解结合电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry, ICP-MS)测量再造烟叶中的砷、钡、铍等17种痕量元素方法。方法 再造烟叶样品经微波消解后, 应用标准模式结合碰撞/反应池技术以及内标法定量进行电感耦合等离子体质谱法的测定, 同时考察碰撞模式及碰撞气流量对测定结果的稳定性与准确性。结果 17种目标元素线性良好, 相关系数r≥0.9995, 检出限为0.001～0.065 mg/kg, 加标回收率为79.3%～123.1%, 相对标准偏差为1.15%～6.38%。结论 该方法具有操作简便、分析时间短、稳定准确等优势, 可满足烟草行业内大批量再造烟叶样品对痕量元素的分析测试。

英文摘要:

      Objective To establish a method for determination of 17 trace elements including arsenic, barium, beryllium and others in reconstituted tobacco by inductively coupled plasma mass spectrometry (ICP-MS) with microwave digestion Methods After sample preparation, 17 elements in analysis solution were analyzed by using standard model and the collision/reaction cell technology with internal standard method for quantitative, and the collision mode and collision gas flow rate were optimized for the stability and accuracy of determination results. Results The correlation coefficients of standard curves were all above 0.9995, and the limits of detection were 0.001~0.065 mg/kg. The recoveries were 79.3%~123.1% and the relative standard deviations were 1.15%~6.38%, respectively. Conclusions This method is simple, rapid and reliable, which is suitable for the simultaneous determination of multi-elements in reconstituted tobacco samples.