乌鲁木齐采样点气溶胶质量浓度特征与影响因素探析  

Analysis on the characteristics and influencing factors of atmospheric aerosol concentration in Urumqi

作　　者：庞荣华 张鹏程 杨向荣 肖红伟[2] 热孜艳·库先艾力 张世凡 Pang Ronghua;Zhang Pengcheng;Yang Xiangrong;Xiao Hongwei;Koxenale·Razya;Zhang Shifan(College of Geology and Mining Engineering,Xinjiang University,Urumqi Xinjiang 830047,China;Jiangxi Province Key Laboratory of The Causes and Control of Atmospheric Pollution,East China University of Technology,Nanchang Jiangxi 330013,China)

机构地区：[1]新疆大学地质与矿业工程学院,新疆乌鲁木齐830047 [2]东华理工大学江西省大气污染成因与控制实验室,江西南昌330013

出　　处：《环境与发展》2020年第6期150-152,共3页Environment & Development

基　　金：新疆大学国家大学生创新训练计划项目-大气气溶胶来源及变化规律(201810755038)。

摘　　要：通过对采样点在2018年3月~2019年2月采集到的气溶胶进行质量浓度变化特征的探究和对温度、气压、风场等影响采样点气溶胶质量浓度的因素的分析,我们发现细颗粒气溶胶全年平均质量浓度大于粗颗粒气溶胶,并且由于沙尘气溶胶的主导作用,采样点采暖季的气溶胶质量浓度大于非采暖季;在采样点,气溶胶的沉降主要与雨雪天气有关,雨雪天气过后,气溶胶质量浓度数据基本为原来的0.5倍以下,特别是细颗粒气溶胶,沉降作用更为明显;在通过对影响因素的分析后,我们发现风场是影响采样点气溶胶的主要因素,它主要通过影响源于附近沙尘区的气流,对采样点的气溶胶造成影响,而温度和压力对采样点气溶胶的影响作用则十分有限。Based on the study of the variation characteristics of aerosol concentration collected from March 2018 to February 2019 and the factors affecting aerosol concentration in sampling points,such as temperature,air pressure and wind field.We found that the average mass concentration of fine aerosol in the whole year was also higher than that in coarse aerosol,because of the dominant role of dust aerosol,the aerosol mass concentration in heating season was higher than that in non-heating season.The aerosol deposition at the sampling point is mainly related to the rain and snow weather.After the rain and snow weather,the aerosol mass concentration data are basically less than half of the original,especially the fine aerosol,the sedimentation effect is more.After analyzing the influencing factors,we found that the wind field is the main factor affecting the aerosol at the sampling point,which mainly affects the aerosol at the sampling point through the airflow originating from the nearby dust area,while the effect of temperature and pressure on the aerosol at the sampling point is very limited.

关 键 词：气溶胶 质量浓度 影响因素 

分 类 号：X831[环境科学与工程—环境工程]