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目的建立电感耦合等离子体质谱(ICP-MS)测定富硒保健食品中硒元素的方法。方法以市售富硒保健食品为研究对象,样品经高压微波消解处理后,应用ICP-MS测定其中硒元素含量。结果本研究方法测定的硒元素的标准曲线线性相关系数为0.999 9;加标回收率范围在99.40%~100.15%;检出限为0.078μg/L;相对标准偏差范围在0.91%~2.65%。结论该方法具有快速、简便、灵敏、准确的优点,适用于保健食品中硒元素的测定。
Objective To establish a method for the determination of selenium in selenium-enriched health food by inductively coupled plasma mass spectrometry (ICP-MS). Methods The commercially available selenium-enriched health food was selected as the research object. After the sample was treated by high-pressure microwave digestion, the content of selenium was determined by ICP-MS. Results The linear correlation coefficient of standard curve for selenium determined by this method was 0.999 9. The recoveries ranged from 99.40% to 100.15%. The detection limit was 0.078 μg / L. The relative standard deviation ranged from 0.91% to 2.65%. Conclusion The method is rapid, simple, sensitive and accurate. It is suitable for the determination of selenium in health food.