微波消解-原子荧光光谱法测定生产尾矿中汞含量

Determination of Mercury in Tailings by Microwave Digestion-Atomic Fluorescence Spectrometry Method

为了准确且稳定的分析出矿石中汞含量,通过微波消解法对含汞试样进行样品处理,确定了最佳消解条件,并用原子荧光法对微量汞进行测定,在0~1.2μg/mL浓度范围内,标准曲线线性良好,对试样中汞进行多次测定,对方法的检出限、精密度及加标回收率进行了考察,方法相对标准偏差2.16%,回收率为95%~102%,该方法操作简便,准确性高,适合推广应用。

The microwave digestion method was used to measure the micro mercury in ores,which was more accurate and stable.The optimum was determined in this study.Atom fluorescence spectrometry was selected to survey and evaluate the micro mercy re-peatedly.The concentration of mercury was in the range of 0~1.2μg/mL showing good linear relationship.By means of measuring method detection limit,sensitivity,and recovery rate,the relative standard derivation was 2.16%,and the recovery rate was 95%~102%.The method was simple and accurate for measurement of mercury in ores,which was suitable for widespread use.