激光剥蚀-电感耦合等离子体质谱(ICP-MS)法测定纯钌中19种杂质元素

建立了激光剥蚀-电感耦合等离子体质谱(LA-ICP-MS)法测定纯钌中Mg、Al、Fe、Ni、Cu、Zn、Rb、Rh、Pd、Mo、Ag、Cd、Sn、Ba、Ir、Pt、Au、Pb和Si等19种杂质元素的分析方法.优化了仪器参数,给出了激光能量为60％,剥蚀孔径为110μm,扫描速率为50μm/s,脉冲频率为10 Hz,载...

Determination of 19 Impurity Elements in Pure Ruthenium by Laser Denudation-Inductively Coupled Plasma Mass Spectrometry

A method for the determination of nineteen impurity elements Mg,Al,Fe,Ni,Cu,Zn,Rb,Rh,Pd,Mo,Ag,Cd,Sn,Ba,Ir,Pt,Au,Pb and Si in pure ruthenium by Laser Ablation Inductively Coupled Plasma-Mass Spectrometry(LA-ICP-MS)was developed.The instrument parameters have been optimized:Giving a laser energy of 60%,denudation pore size 110μm,the scan rate 50μm/s,pulse rate of 10 Hz and the carrier gas flow rate of 0.74 L/min,signal strength and stability is optimum.Because ruthenium standard sample is difficult to obtain,in this paper,the ruthenium powder was dissolved at high temperature and high pressure,elements other than silicon determined by ICP-MS.The relative sensitivity factor(RSF)of ruthenium powder was determined by ICP-MS.The relative sensitivity factor(RSF)is used to correct the measured results,the method is accurate and quick.The detection limit was 0.007—12.8μg/g,and the relative standard deviation(RSD)was 10%—30%.The method was applied to the quantitative determination of impurity elements in pure ruthenium.The results were in good agreement with those obtained by ICP-MS glow discharge mass spectrometry.