大气中含铁氧化物作用下二次无机颗粒物的形成机制  

Formation Mechanism of Secondary Inorganic Particles under Influence of Iron Oxides in Atmosphere

作　　者：杨子墨 何翔[1] 董明松 陈星雨[1] 杨超群 尼给来·阿不来提 阿力木·肉孜 YANG Zimo;HE Xiang;DONG Mingsong;CHEN Xingyu;YANG Chaoqun;Nigeilai Abulati;Alimu Rouzi(College of Ecology and Environment,Xinjiang University,Xinjiang Urumqi 830017,China)

机构地区：[1]新疆大学生态与环境学院,新疆乌鲁木齐830017

出　　处：《广州化工》2024年第21期139-142,174,共5页GuangZhou Chemical Industry

基　　金：国家级大学生创新训练计划项目(202310755079);新疆维吾尔自治区自然科学基金资助项目(2022D01C387)。

摘　　要：铁是矿尘气溶胶的主要元素之一,在大气中常以氧化铁颗粒物的形式存在,二氧化硫、二氧化氮等一次气态污染物容易与颗粒物发生非均相化学反应。因此,理清含铁氧化物与典型无机气体发生非均相反应形成二次无机颗粒物的机理,对大气污染控制具有重要的指导意义。本文总结了大气中无机颗粒物的主要成分和来源,分析了大气前体物在含铁颗粒物表面反应生成二次无机颗粒物中的机制,明确了大气污染条件下含铁颗粒物表面反应的复合效应,目的在于理清大气中含铁氧化物对大气污染的影响,并针对大气污染防治提供对策建议,为有效治理雾霾提供理论依据。Iron is one of the main elements of mineral dust,which exists in the form of iron oxide particles in the atmosphere.Primary gaseous pollutants such as sulfur dioxide and nitrogen dioxide are prone to heterogeneous chemical reactions with particulate matter.Therefore,understanding the mechanism of heterogeneous reaction between iron oxides and typical inorganic gases on the surface of atmospheric particulate matter to form secondary inorganic particulate matter is of great guiding significance for air pollution control.The main components and sources of inorganic particles in the atmosphere were summarized,the mechanism of the reaction of atmospheric precursors on the surface of iron particles to form secondary inorganic particles was analyzed,and complex effects of reactions on the surface of iron under air pollution conditions were clarified.The purpose was to clarify the influence of iron oxides in the atmosphere on air pollution,provide suggestions for air pollution control,and provide theoretical basis for effective control of haze.

关 键 词：含铁氧化物 二次无机颗粒物 非均相反应 反应机理 复合效应 

分 类 号：X511[环境科学与工程—环境工程]