能量色散X射线荧光光谱法测定汽油中铅、铁、锰含量

利用能量色散X射线荧光光谱仪,建立了能量色散X射线荧光光谱法同时快速测定汽油中Pb,Fe,Mn含量的方法,并对方法进行了准确性和重复性考察。结果表明,Pb,Fe,Mn质量分数在0~100μg/g范围内均具有良好的线性关系,检出限分别为0.06,0.4,0.09μg/g,回收率均在91.7%~107.9%之间,相对标准偏差均小于3.0%。该方法可以同时快速测定汽油中的Pb,Fe,Mn元素含量。

SIMULTANEOUS DETERMINATION OF LEAD,IRON AND MANGANESE IN GASOLINE BY ENERGY-DISPERSIVE X-RAY FLUORESCENCE SPECTROMETRY

AA method for determining elements of lead, iron and manganese in gasoline simultaneously by energy-dispersive X-ray fluorescence spectrometry (EDXRF) was developed. The precision of this method was inspected. The results show a great linear relationship in the ion concentration range from 0μg/g to 100μg/g. The detection limits for lead, iron and manganese are 0.06, 0.4 and 0.09 μg/g, respectively. The recovery rates are between 91.7% and 107.9%, and the relative standard deviation is less than 3%. This method for determination of Pb, Fe, Mn in gasoline simultaneously is more simple and fast.