电感耦合等离子体发射光谱测定煤中钍、钒、镓、锗

ICP- OES Determination of Th,V,Ga,Ge in Coal Sample

采用HNO3和HF／HClO4的消解处理样品，采用电感耦合等离子体发射光谱法（ ICP－OES）测定灰化煤样中钍、钒、镓、锗4种金属元素含量。实验结果表明，该方法对这4种待测元素的加标回收率范围在93.46％～106.10％之间，相对标准偏差范围在0.91％～4.78％之间，方法的准确度和精密度均符合要求。本方法操作简单、灵敏度高，检测速度快结果准确，能满足煤中多种金属元素同时测定的分析需求。

The contents of four metal elements in ashed of coal sample , including Th, V, Ga and Ge, were analyzed by Inductively Coupled Plasma Optical Emission Spectrometer （ICP-OES）.The sample was digested by HNO3 and HF/HClO4.The results showed that the linearity of calibration curves was good , and the recovery of these metal elements was between 93.46% and 106.10%.The relative standard deviation was between 0.91% and 4.78%.The method was highly sensitive , simple, rapid and the result was accurate , can be applied for analysis of metal elements in coal.