微波消解-电感耦合等离子体发射光谱法快速测定煤基油品中的Ni、Fe、V元素

RAPID DETERMINATION OF METAL ELEMENTS IN COAL-BASED OIL BY INDUCTIVELY COUPLED PLASMA EMISSION SPECTROMETRY

采用电感耦合等离子体发射光谱法测定煤基油品中的Ni、Fe、V元素,对比分析了灰化法和微波消解法的前处理方法,并优化了实验条件,建立了各元素的标准曲线,相关系数均在0.9995以上,加标回收率为98.8%~104.0%,相对标准偏差均小于2%(n=6)。

Inductively coupled plasma atomic emission spectrometry(ICP-AES)was used to determine Ni,Fe and V in coal based oil.Two pretreatment methods,ashing method and microwave digestion method,were compared and studied,and the experimental conditions were optimized.The standard curve of each element was established,and the correlation coefficient was above 0.9995.In the actual sample analysis,the recovery rates of this method range between 98.8%and 104.0%,and the relative standard deviation of repeated determination was less than 2%(n=6).The method is also applied to the determination of standard material,and the result is basically consistent with the value of standard material.