ICP-AES测定锰矿中的微量元素

用酸消解对矿石样品进行预处理,用电感耦合等离子体发射光谱法一次测定锰矿石中的Co、Cu、Ni、Pb、Zn和Ba等6种痕量元素。采用干扰系数校正法消除共存元素对被干扰元素的影响后对锰矿石标准物进行分析,方法的相对标准偏差(RSD)为0.3%~2.5%,精密性良好,通过对待测样品的分析,样品中6种待测元素的相对标准偏差(RSD)为0.95%~4.31%,对待测元素Co和Pb的回收实验表明加标回收率为97.5%~103%,该方法分析速度快,工作量小,分析精度高,能满足锰矿石中痕量元素的分析要求。

Determination of Trace Elements in Manganese Ores by Inductively Coupled Plasma Atomic Emission Spectrometry

Inductively coupled plasma atomic emission spectrometry（ICP-AES） was used to determine the Co,Cu,Ni,Pb,Zn and Ba content in manganese ores.The spectral interference on some trace elements was eliminated by interference factor correction.The proposed method was applied to the determination of national reference manganese materials,and the results were in good agreement with the certified values.The relative standard deviation was 0.3% to 2.5%.The relative standard deviation of the six determinant elements in two manganese ores samples was 0.95% to 4.31%.Recoveries of Co and Pb were in the range of 97.5% to 103%.The result indicated that the method has advantages such as high precision and accuracy,as well as fast analysis and simple operation,and could meet the analytical requirements of manganese ores.