日照市雾霾天气大气颗粒物微观形貌及物质来源研究

以日照市为研究对象,通过采集雾霾天气大气颗粒物样本,利用扫描电子显微镜、ICP-MS等工具对其进行形态特征分析,探讨了日照市雾霾天气大气颗粒物(PM_(2.5))的微观形态特征及其来源。结果表明:日照市PM_(2.5)颗粒物主要以无定形态为主,为含铁、镁、铝、钾、钠的硅酸盐颗粒;日照市PM_(2.5)的主要来源包括道路扬尘及建筑施工排放、交通汽车尾气排放、燃煤、电子垃圾拆解等。通过对日照市PM_(2.5)微观形态特征和来源的研究,可为改善日照市的大气环境质量提供科学依据。

The atmospheric particulate matter samples in haze weather were collected from Rizhao city,their morphological characteristics by using scanning electron microscope,ICP-MS and other tools were analyzed,and the micro-morphological characteristics and sources of particulate matter(PM_(2.5))in Rizhao during haze weather were investigated.The results showed that the PM_(2.5) particles in Rizhao were mainly amorphous,which mainly were silicate particles containing iron,magnesium,aluminum,potassium and sodium.The main sources of PM_(2.5) in Rizhao include road dust and construction emissions,vehicle emissions,and the coal burning and dismantling of e-waste.The study on the micro-morphological characteristics and sources of PM_(2.5) in Rizhao can provide scientific basis for improving the air quality in Rizhao.