ICP-OES/ICP-MS测定葵花子中28种无机元素

建立了葵花子中微量元素组成的分析方法。采用HNO₃+H₂O₂混合酸为消解体系经微波消解葵花子样品，电感耦合等离子体发射光谱(ICP-OES)法测定葵花子中Al，B，Ca，Fe，K，Mg，Na，Si，P和S，电感耦合等离子体质谱(ICP-MS)法测定葵花子As，Ba，Cd，Co，Cr，Cu，Li，Mn，Mo，Ni，Pb，Rb，Sr，Sn，Sb，Ti，V和Zn。采用国家一级标准物质大米(GBW10045)验证了方法的准确性，结果表明，标准物质的测定结果与参考值基本一致，葵花子中Ca，K，Mg，P，S的含量较高。该方法具有良好的准确性和精密度。

Study on the Determination of 28 Inorganic Elements in Sunflower Seeds by ICP-OES/ICP-MS

The present paper describes a simple method for the determination of trace elements in sunflower seeds by using inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma spectrometry (ICP-MS). HNO3+H2O2 were used to achieve the complete decomposition of the organic matrix in a closed-vessel microwave oven. The contents of 10 trace elements (Al, B, Ca, Fe, K, Mg, Na, Si, P and S) in sunflower seeds were determined by ICP-OES while 18 trace elements (As, Ba, Cd, Co, Cr, Cu, Li, Mn, Mo, Ni, Pb, Rb, Sr, Sn, Sb, Ti, V and Zn) were determined by ICP-MS. The rice reference material (GBW10045) was used as standard reference materials. The results showed a good agreement between measured and certified values for all analytes. The concentrations of necessary micro elements Ca, K, Mg, P and S were higher. This method was simple, sensitive and precise and can perform simultaneous multi-elements determination of sunflower seeds.