某市环境空气污染物质量浓度时间分布特征分析  

Spatial and Temporal Distribution Characteristics of Ambient Air Pollutant Concentration in a Certain City

作　　者：蔡自刚 马军 Cai Zigang;Ma Jun(Gejiu City ecological environment monitoring station,Gejiu 661000,China)

机构地区：[1]个旧市生态环境监测站,云南个旧661000

出　　处：《云南化工》2024年第9期116-118,共3页Yunnan Chemical Technology

摘　　要：选取某市2021—2023年逐时PM_(2.5)和PM_(10)数据,揭示当地颗粒物的时间变化特征及其影响因素。2021—2023年,PM_(2.5)和PM_(10)的平均质量浓度分别下降了17.61%和15.87%,表明在此期间有效的控制措施取得了效果,但质量浓度仍超过了Ⅱ级标准的年度限值。PM_(2.5)和PM_(10)的质量浓度冬季最高,夏季最低。此外,PM_(2.5)和PM_(10)的日变化规律一致,均为双峰双谷型。通过对该市大气颗粒物的分析,为科学认识该市大气污染的影响因素提供了依据。In this paper,hourly PM_(2.5) and PM_(10) data of a certain city from 2021 to 2023 were selected to reveal the temporal variation characteristics and influencing factors of local particulate matter.The average concentration of PM_(2.5) and PM_(10) decreased by 17.61%and 15.87%,respectively,from 2021-2023,indicating that effective control measures during this period were effective,but still exceeded the annual limits of the Class Ⅱ standard.PM_(2.5) and PM_(10) concentrations are highest in winter and lowest in summer.In addition,the daily variation of PM_(2.5) and PM_(10) is the same,and both are bimodal and bimodal.Through the analysis of atmospheric particulate matter in the city,it provides a basis for scientific understanding of the influencing factors of air pollution in the city.

关 键 词：环境空气 污染物质量浓度 时空分布特征 

分 类 号：X83[环境科学与工程—环境工程]