【摘要】 建立了电感耦合等离子体质谱(ICP-MS)法测定用HNO3+H2O2混合酸经微波消解处理苦杏仁样品中B,Na,Mg,Al,P,K,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Se,Rb,Sr,Mo,Cd,Ba,Pb等24种微量元素的分析方法,优化了仪器的最佳工作条件。通过添加标准进行加标回收,结果表明,24种待测微量元素的相对标准偏差(RSD)均小于4.79%,回收率在90.00%～109.30%之间。该法具有准确度高、精密性好、并能同时进行多种元素测定等优点,该法可为苦杏仁中无机元素的快速检测提供科学依据。更多还原

【Abstract】 Samples of bitter almond were digested by microwave digestion,and trace elements amounts of B,Na,Mg,Al,P,K,Ca,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,As,Se,Rb,Sr,Mo,Cd,Ba and Pb in sample solutions were determined by inductively coupled plasma mass spectrometry(ICP-MS).HNO3+H2O2 was used to achieve the complete decomposition of the organic matrix in a closed-vessel microwave oven.The working parameters of the instrument were optimized.The results showed that the relative standard deviation(RSD) was less than 4.79% for all the elements,and the recovery was 90.00%~109.30% by adding standard recovery experiment.This method was simple,sensitive and precise and can perform simultaneous multi-elements determination for bitter almond,which could satisfy the sample examination request and provide scientific rationale for determining inorganic elements in bitter almond.更多还原