【摘要】 [目的]研究扫描电镜技术在颗粒物的物理特征和形态分布中的应用。[方法]运用扫描电镜技术,分析龙岩市各尘源的形态特征和含有的主要元素,对比采样点样品的形态特征,判断大气可吸入颗粒物的主要来源。[结果]与CMB8.2化学质量平衡受体模型源解析结果相比较,两者具有较好的一致性。以龙岩师专、闽西职业技术学院、龙岩学院、龙岩市环境监测站四个大气常规监测点为例,对PM10贡献较大的分别是土壤风沙尘、燃煤尘、二次扬尘;土壤风沙尘、二次扬尘、机动车尾气尘;二次扬尘、土壤风沙尘;二次扬尘、机动车尾气、燃煤尘。[结论]研究结果对于大气颗粒物源解析、大气环境治理都有一定的指导意义。更多还原

【Abstract】 [Objective] The aim was to study the application of scanning electron microscopy(SEM) on the physical property and ideological distribution of partials.[Method] By dint of scanning electron microscopy,the morphological property of each source and main elements were analyzed.Compared with morphological property of sampling point,the source of particles was determined.[Result] The results were consistent with the analysis of CMB8.2 chemical mass balance receptor model.Taking the four detection stations in Longyan Normal Training College,Min Xi Vocational & Technical College,Longyan University,and Longyan Environment Monitoring Station as examples,the major air pollutants respectively were soil,coal dust,second emitted dust,soil second emitted dust,vehicle exhausts emission;second emitted dust,soil;and second emitted dust,vehicle exhausts emission,coal dust.[Conclusion] The study result had certain guiding significance to the analysis of sources of particles in the atmosphere and atmosphere environment treatment.更多还原