考核水样中19种微量元素的ICP-AES同时测定法

目的建立电感耦合等离子体-原子发射光谱法同时测定考核水样中铝、锑、砷、钡、铍、硼、镉、铬、铜、铁、铅、锰、钼、镍、硒、银、铊、钒、锌共19种微量元素含量的分析方法。方法优化了仪器条件,提高了信噪比,避免了谱线干扰,水样按考核要求用0.5%硝酸稀释后直接进样分析。结果 19种微量浓度在0～2.0μg/ml范围内呈良好线性关系,方法最低检出限在0.3～6.3μg/L,回收率为89.0%～105.1%,相对标准偏差(RSD)为0.18%～4.30%。结论该方法是一种快速,灵敏,准确的分析方法,可用于考核水样中19种微量元素的同时测定。

Simultaneous determination of 19 trace elements in examined water samples by ICP-AES

[Objective]To establish a method for simultaneous determination of Al, Sb, As, Ba, Be, B, Cd, Cr, Cu, Fe, Pb, Mn, Mo, Ni, Se, Ag, Tl, V and Zn in examined sample by inductively coupled plasma atomic emission spectrometry（ ICP-AES ） [ Methods ] The experimental conditions were optimized based on the improvement of signal to noise ratio, avoiding spectral interference between the elements. The water samples were direct analyzed, which were diluted by 0.5 % nitric acid according to the exam- ined requirements. [ Results] The results showed good linearity of 19 kinds of trace elements ranged from 0 -2.0 μg/ml. The lowest determination limits were 0,3-6.3 μg/L. The recovery and the RSD of the method were 89.0-105.1% and 0.18-4.3% ,respectively. [ Conclusion] This method is rapid, sensitive and accuracy, which can meet the demand for 19 kinds of trace dements simultaneous determination in examined samples.