Liu Hong-Wei, Qin Zong-Hui, Xie Hua-Lin, Cao Shu
College of Material and Chemical Engineering, Hunan Institute of Technology, Hengyang 421002, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 Jan;33(1):224-7.
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.
本文介绍了一种使用电感耦合等离子体发射光谱法（ICP-OES）和电感耦合等离子体质谱法（ICP-MS）测定葵花籽中微量元素的简单方法。采用HNO₃ + H₂O₂在密闭容器微波炉中实现有机基质的完全分解。用ICP-OES测定葵花籽中10种微量元素（Al、B、Ca、Fe、K、Mg、Na、Si、P和S）的含量，用ICP-MS测定18种微量元素（As、Ba、Cd、Co、Cr、Cu、Li、Mn、Mo、Ni、Pb、Rb、Sr、Sn、Sb、Ti、V和Zn）的含量。以大米标准物质（GBW10045）作为标准参考物质。结果表明，所有分析物的测定值与认证值之间具有良好的一致性。必需微量元素Ca、K、Mg、P和S的浓度较高。该方法简单、灵敏、精确，可同时对葵花籽进行多元素测定。
