茶叶浸泡液中微量元素形态的Visual MINTEQ软件模拟分析

Visual MINTEQ Modeling Research on Trace Elements in Tea Infusion

利用火焰原子吸收光谱法测定茶叶浸泡液中常见的4种微量元素的含量,应用离子色谱法检测其中的F-、Cl-、NO2-、Br-、NO3-、PO43-、SO42-含量,结合Visual MINTEQ软件模拟茶叶浸泡液中Fe、Cu、Zn、Pb 4种微量元素的存在形态,表明Fe、Cu、Zn、Pb分别以Fe(OH)2+、Cu2+、Zn2+、Pb2+为优势态存在于茶叶浸泡液中。

The Flame Atomic Absorption Spectrometry method was used in the determination of four trace amounts of tea infusion.The Ion Chromatography method was used in the determination of amounts of F-,Cl-,NO2-,Br-,NO3-,PO43-and SO42-in tea infusion.Moreover,Fe,Cu,Zn and Pb in the tea infusion were simulated by the software Visual MINTEQ.The results revealed that Fe（OH）2＋,Cu2＋,Zn2＋ and Pb2＋ were dominant species in the tea infusion.