【摘要】 来自不同排放源的大气气溶胶,其化学组成特别是微量元素组成具有各自的特征,在Micro-PIXE能谱上呈现不同的特征峰。因此单个气溶胶颗粒物的Micro-PIXE能谱特征可作为其指纹,查找污染源。本文提出了适应于Micro-PIXE谱的模式识别算法,并对这种以Micro-PIXE能谱特征溯源的方法进行了可靠性检验。结果表明以此种方法进行源解析具有较高的可信度。相应的模式识别算法具有准确,快速的特点。更多还原

【Abstract】 The micro-PIXE spectra of aerosol particles from different emitter sources have different characteristic peaks, due to different chemical compositions of these particles. Thus, the micro-PIXE spectra can be considered as fingerprints of the aerosol particles. In order to identify the sources of aerosol particles, a pattern recognition method was developed and the method was examined and the result shows that the method is reliable and efficient.更多还原