2022年重大活动期间空气质量保障及污染过程分析  

Air quality assurance and pollution process analysis during major events in 2022

作　　者：杨志轩 张颖 赵海丽 刘红艳 丁志安 徐瑞红 刘桓嘉 Yang Zhixuan;Zhang Ying;Zhao Haili;Liu Hongyan;Ding Zhi′an;Xu Ruihong;Liu Hengjia(Henan Anyang Ecological Environment Monitoring Center,Anyang 455000,China;School of Environment,Henan Normal University,Xinxiang 453007,China)

机构地区：[1]河南省安阳生态环境监测中心,河南安阳455000 [2]河南师范大学环境学院,河南新乡453007

出　　处：《能源与环保》2024年第1期10-16,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金项目(42007204);河南省科技攻关项目(222102320394)。

摘　　要：2022年10月16-22日在北京召开某重大活动,安阳市作为空气质量保障通道城市,在思想上高度重视,在行动上积极响应,并于10月12日启动协商减排措施;但在10月14-16日,不利气象条件叠加区域性污染,安阳市经历了一轮轻至中度污染过程。对本轮污染过程进行深入分析,结果表明此次污染过程中综合指数占比最大的为颗粒物,污染负荷比为62.2%,其中PM2.5占比为34.9%。对比污染过程前后离子浓度表明,二次组分变化是导致本次PM2.5污染的关键因素之一;浓度权重轨迹分析表明,本次污染本地积累为主,外部传输受到上风向鹤壁市、新乡市和邯郸市的影响。A major event was held in Beijing from October 16th to 22nd,2022.As a city that guarantees air quality,Anyang attaches great importance to ideology and actively responds in action.On October 12th,it launched negotiations on emission reduction measures.However,from October 14th to 16th,Anyang City experienced a round of slight to moderate pollution as adverse meteorological conditions combined with regional pollution.This study conducted an in-depth analysis of the current pollution process,and the results showed that particulate matter had the highest proportion in the comprehensive index during this pollution process,with a pollution load ratio of 62.2%,of which PM2.5 accounted for 34.9%.The comparison of ion concentrations before and after the pollution process indicated that the change in secondary components was one of the key factors leading to PM2.5 pollution in this case.The concentration weight trajectory analysis showed that local accumulation was the main source of pollution in this case,while external transmission was affected by the upwind direction towards Hebi City,Xinxiang City,and Handan City.

关 键 词：空气质量保障 污染特征分析 浓度权重轨迹 

分 类 号：X511[环境科学与工程—环境工程]