了确定PIXE(质子X荧光分析)的测量准确性,进行了三个实验室的横向比对分析。比对中使用了30个单元素样品和一个多元素样品。结果显示,对于绝大多数样品,三家的致性好于10％,三次测量的重复性相对于平均值好于6％。用一个自动的时间顺序步进采样器在北京采集了大气气溶胶样品,用PIXE对这些样品进行元素分析,然后对元素浓 To determine the measurement accuracy of PIXE (Proton X Fluorescence Analysis), a lateral alignment analysis of three laboratories was performed. The comparison used 30 single-element samples and one multi-element sample. The results showed that for the vast majority of samples, the three were more than 10% and the repeatability of the three measurements was better than 6% relative to the average. An aerosol sample of atmospheric aerosol was collected in Beijing using an automated time-sequenced sampler. Elemental analysis of these samples was performed with PIXE, and then the elemental concentration