等离子体发射光谱法同时测定废水中多种痕量重金属元素

Simultaneous Determination of Multi-trace heavy metal elements in Industrial Wastewater by ICP-AES

使用高频电感耦合等离子体发射光谱仪(ICP-AES)同时检测废水中Cu、Fe、Zn、Pb、As等7种微量重金属元素。这种方法下7种元素的相对标准偏差(RSDs)均小于5%,回收率在89.9%-102.5%之间,最低检出限能满足废水检测的要求。该方法对工业废水中的重金属元素进行及时、准确的监测和控制有重要意义。

In this paper, a method of determining seven trace heavy metal elements （ including Cu, Fe, Zn, Pb, As ect. ） in industrial wastewater by ICP- AES was studied. Under this method, the relative standard deviations （RSI）s） of seven elements are less than 5%, and their recovery ratios are between 89. 9% and 102. 5%. The minimum detection limits（DL） of this method are suitable for wastewater detection. This approach is proved to be significant for monitoring and controlling trace heavy metal elements in industrial wastewater rapidly and accurately.