微波消解火焰原子吸收法测定苦荞中的微量元素

Measurement of Trace Element in Tartary Buckwheat by Flame Atomic Absorption Spectrometry with Microwave Digestion

[目的]采用微波消解火焰原子吸收法测定苦荞中的微量元素。[方法]用HNO3+H2O2对苦荞样品进行微波消解处理,采用火焰原子吸收光谱法测定苦荞消解液中的Fe、Cu、Zn、Mn、Mg的含量。[结果]苦荞中Mg的含量较高;各元素的回收率为94.8%～101.5%,结果满意。[结论]该法简便、快速、准确,有良好的重现性,能满足日常分析检测的需要。

[Objective] The research aimed to measure the trace element in Tartary buckwheat by the flame atomic absorption spectrometry with microwave digestion.[Method] Tartary buckwheat sample was carried out the microwave digestion by HNO3 ＋ H2O2.The flame atomic absorption spectrometry was used to measure the contents of Fe,Cu,Zn,Mn and Mg in the digestion solution of Tartary buckwheat.[Result] Mg content was higher in Tartary buckwheat.The recovery ratio of each element was during 94.8%-101.5%,and the result was satisfactory.[Conclusion] The method was simple,convenient,quick and accurate.It had the good repeatability and could satisfy the requirement of routine analysis and detection.