摘要
运用扫描电镜和Ｘ射线能谱分析枝术，对太原市５种大气源尘的表面特征进行分析，结果显示各源尘均具有各自的特征元素和形态特性；工业冶金尘的Ｆｅ、建材尘的Ｃａ和汽车尘的Ｐｂ为其特征峰。燃煤尘和土壤尘表面元素组分相似，均以Ａｌ和Ｓｉ为主．但形态截然不同，前者颗粒小为圆形，后者颗粒大，形状不规则。
Surface characters of particles emitted from five source types in Taiyuan were analyzed by a Scanning Electron Microscopy with An Energy Dispersive X-Ray Spectremeter.The results indicated that Particles from different sources showed specific elements and morphological features Fe was characterizatic peak for metallurgical dusts.Ca for limestone dusts and Pb for auto exhaust particles.Element compositions for coalcombustion particles and soils dusts were similar,both Si and Al were major Peaks,but their morphological features very different,the former was small smooth spheres whereas the latter was large irregular of crystal shape.
关键词
大气颗粒物
源尘
元素
形态特征
Source particles Element Morphological feature
