电感耦合等离子体质谱法检测小浆果中6种重金属含量

Determination of 6 heavy metals content in small berry by inductively coupled plasma-mass spectrometry

中文关键词:  微波消解  电感耦合等离子体质谱法  小浆果  重金属

英文关键词:microwave digestion  inductively coupled plasma-mass spectrometry  small berry  heavy metal

中文摘要:

      目的 建立电感耦合等离子体质谱法(inductively coupled plasma-mass spectrometry, ICP-MS)测定小浆果中6种重金属的分析方法。方法 样品经微波消解, 以锗(72Ge)、铟(115In)、铋(209Bi)为内标, 采用ICP-MS法同时测定上述6种元素的含量。结果 各测定元素标准曲线的相关系数r≥0.9990, 回收率为80.6%~97.3%, 相对标准偏差为1.1%~5.5%。结论 该方法简便、快速、准确, 可用于小浆果中这6种重金属的含量测定。

英文摘要:

      Objective To establish a method of the determination of six kinds of heavy metals in small berry by inductively coupled plasma-mass spectrometry (ICP-MS). Methods The samples were dissolved by microwave digestion. Germanium (72Ge), indium (115In) and bismuth (209Bi) were used as internal standards. The contents of the above six elements were determined by ICP-MS. Results The correlation coefficients of the standard curve of each measured element were r≥0.9990. The recoveries were 80.6%?97.3 %, and RSDs were 1.1%?5.5%. Conclusion This method is simple, rapid and accurate, which can be used for the determination of these heavy metals in small berry．