用IRIS/AP-ICP-AES法同时测定废水中的Cd、Cr、Cu、Ni、Pb和Zn

Simultaneous Determination of Cd,Cr,Cu,Ni,Pb and Zn Contents in Waste Water by IRIS/AP-ICP-AES

本文采用 IRIS/AP- ICP- AES法同时测定废水中的 Cd、Cr、Cu、Ni、Pb和 Zn。选择了最佳的仪器工作条件 ,并选取了被测元素的最佳谱线。样品中的干扰因子通过谱线的背景校正方法予以消除。本法操作简便 ,结果准确 ,其相对标准偏差均小于 2 % ,回收率在 98%— 1 0 4%之间。

The IRIS/AP ICP AES method was applied to simultaneously assay of Cd,Cr,Cu,Ni,Pb and Zn contents in waste water.The optimum work conditions and the prominent wavelengths of assayed elements were selected.The interference factors were eliminated by wavelength background correction.The results indicated that the method is convenient and accurate.The relative standard deviation is less than 2% and the recovery ranged is from 98% to 104%.