基于组分分析的城市PM_(2.5)来源及季节变化特征——以上饶市为例  

Source and Seasonal Variation Characteristics of Urban PM_(2.5)Based on Component Analysis——Taking Shangrao City as an Example

作　　者：熊晓雅 XIONG Xiaoya(Shangrao Ecological Environment Bureau,Shangrao 334000,China)

机构地区：[1]上饶市生态环境局,江西上饶334000

出　　处：《中国资源综合利用》2025年第1期201-203,共3页China Resources Comprehensive Utilization

摘　　要：为了解不同源的PM_(2.5)成分构成及它们对总体污染水平的贡献,以上饶市为例,分析PM_(2.5)化学组分的季节变化特征及其来源。化学组成分析结果表明,PM_(2.5)化学组分随季节变化,有机物(Organic Matter,OM)和硝酸盐在冬季占据较大比例,而硫酸盐和地壳元素在春季的浓度高于其他季节。碳组成分析表明,机动车尾气是上饶市的主要一次碳质排放源。污染来源分析结果表明,对于一次排放源,移动源在夏季和秋季的影响较为突出;春季时扬尘源对空气质量的负面影响更显著,而燃烧源,尤其是燃煤和生物质燃烧,在冬季对空气质量的影响更显著。To understand the composition of PM_(2.5) components from different sources and their contributions to the overall pollution level,taking Shangrao city as an example,analyze the seasonal variation characteristics and sources of PM_(2.5) chemical components.The chemical composition analysis results indicate that the chemical composition of PM_(2.5) varies with seasons,with Organic Matter(OM)and nitrate accounting for a larger proportion in winter,while sulfate and crustal elements have higher concentrations in spring than in other seasons.Carbon composition analysis shows that motor vehicle exhaust is the main source of carbon emissions in Shangrao city.The analysis of pollution sources shows that for a single emission source,the impact of mobile sources is more prominent in summer and autumn;the negative impact of dust sources on air quality is more significant in spring,while combustion sources,especially coal and biomass combustion,have a more significant impact on air quality in winter.

关 键 词：组分分析 PM_(2.5) 季节变化 

分 类 号：X513[环境科学与工程—环境工程]