电感耦合等离子体发射光谱法测定二硼化锆中26种杂质

建立微波消解样品,电感耦合等离子体发射光谱法测定二硼化锆中26种杂质元素含量的方法。根据二硼化锆的化学组成对杂质检测的影响,确定了各元素最佳分析线;通过考察不同浓度的锆基体对待测元素的影响来确定最佳锆基体浓度;通过萃取法分离硼元素,消除硼对杂质检测的干扰;采用基体匹配法、多谱拟和技术消除了锆基体的干扰。在选定的仪器工作条件下,各待测元素的质量浓度与信号强度成良好的线性关系,线性相关系数均大于0.999。测定结果的相对标准偏差不大于6%(n=11),样品加标回收率为94%~101%。该方法操作简便,测定结果准确,可用于二硼化锆中26种杂质元素的测定。

Determination of 26 impurities in zirconium diboride by inductively coupled plasma atomic emission spectrometry

The method for determination of 26 impurity elements in zirconium diboride was established by inductively coupled plasma emission spectrometry after microwave digestion.The optimum analysis line of each element was determined according the influence of chemical composition of zirconium diboride on impurity.The optimum zirconium matrix concentration was determined by the effect of different concentrations of zirconium matrix on the determining element.Boron in sample was separated by extraction method to eliminate the interference of boron to impurity detection.The matrix matching method and multispectral quasi sum technique were used to eliminate the interference of zirconium matrix.At the selected working condition of the instrument,the mass concentration of the elements to be measured and the signal strength had good linear relationship,the linear correlation coefficient was all more than 0.999.The recoveries of the samples were 94%-101%,and the detection limits of 26 impurity elements were not more than 6%(n=11).The method can be used for the determination of 26 impurity elements in zirconium diboride with simple operations and accurate results.