应用同步辐射微束X射线荧光光谱法研究单个大气PM2.5颗粒物的源特征
Study on the Source Characteristics of Individual PM2.5 Airborne Particles by Synchrotron Radiation Micro-beam X-ray Fluorescence Spectrometry
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摘要: 将高灵敏度的同步辐射微束x射线荧光光谱分析方法与计算机模式识别技术相结合,用于上海市大气PM2.5,单颗粒物的源识别。分析了污染排放源的PM2.5,单颗粒物,结果表明,来自不同污染排放源的颗粒物具有不同的能谱特征。同时分析了环境空气监测样品PM2.5,单颗粒物,结果表明,在上海市中心区大气PM2.5,的污染源主要以机动车尾气为主,而在吴淞工业区大气PM2.5,的污染源主要以钢铁工业尘和燃煤烟尘为主。Abstract: Synchrotron radiation micro-beam X-ray fluorescence (micro-SXRF) spectrometry combining with pattern recognition technique was applied to identify sources of individual PM_(2.5) airborne particles in ambient air of Shanghai City.The PM_(2.5) airborne part