无锡市区大气污染物状况及变化趋势分析  

Analysis on the Status and Change Trends of Air Pollutants in Wuxi City

作　　者：宋挺[1,2] 龚绍琦 石浚哲[2] 冬梅 SONG Ting;GONG Shaoqi;SHI Junzhe;DONG Mei(School of Environmental Science and Engineering, Nanjing University of Information Science ＆ Technology, Nanjing 210044, China;Wuxi Environmental Monitoring Centre, Wuxi 214121, China)

机构地区：[1]南京信息工程大学环境科学与工程学院,江苏南京210044 [2]无锡市环境监测中心站,江苏无锡214121 [3]南京信息工程大学地理与遥感学院,江苏南京210044

出　　处：《中国环境监测》2018年第3期30-38,共9页Environmental Monitoring in China

基　　金：教育部人文社会科学基金"长三角地区大气PM2.5遥感监测及其时空分布特征研究"(16YJCZH021);国家科技重大专项子课题(2012ZX07506-002)

摘　　要：使用2012—2015年无锡市区的6种大气污染物监测数据,对无锡市区各污染物的年度变化、空间分布、影响因素进行了分析。结果表明:(1)2012—2015年无锡市区SO_2、O_3质量浓度呈下降趋势,且趋势显著;NO_2质量浓度呈下降趋势,但不明显;CO、PM_(10)、PM_(2.5)的质量浓度年际变化比较平稳。(2)无锡市区SO_2、NO_2、PM_(10)、PM_(2.5)、CO的空气质量分指数(IAQI)均为冬季最高、夏季最低;O_3的IAQI则为夏季最高、冬季最低。(3)SO_2、NO_2、PM_(10)、PM_(2.5)、CO浓度间呈两两正相关,且相关性极显著;O_3浓度与NO_2、CO呈显著负相关,与SO_2、PM_(10)、PM_(2.5)浓度之间没有明显的关联。(4)分析了无锡市区各项大气污染物浓度的空间分布特征。(5)SO_2、NO_2、PM_(10)浓度周内变化具有"周末效应"的特征,而O_3、CO和PM_(2.5)浓度周内变化出现"反周末效应"。In this paper,the annual change,spatial distribution and influencing factors of air pollutants in urban area of Wuxi were analyzed using six kinds of monitoring data in local area from 2012 to 2015. The results showed that：（1）The concentration of SO2 and O3 in Wuxi urban area decreased significantly from 2012 to 2015,the concentration of NO2 showed a insignificant declining trends,and the concentration of CO,PM（10） and PM（2.5） did not show obvious trends.（2）The IAQI of SO2,NO2,PM（10）,PM（2.5） and CO in Wuxi urban area were the highest in winter and lowest in summer,while the IAQI of O3 was the highest in summer and lowest in winter.（3） There was a significantly positive correlation between the SO2,NO2,PM（10）,PM（2.5） and CO concentrations. Significantly negative correlations existed between the O3 concentration and the NO2 and CO concentrations,and no correlations existed between O3 and SO2,PM（10）,PM（2.5）.（4）The spatial distribution characteristics of atmospheric pollutants in Wuxi were analyzed.（5） The concentrations of SO2,NO2,O3,PM（10） showed ＂ weekend effects＂,while the concentrations of CO and PM（10） showed ＂ anti-weekend effects＂.

关 键 词：无锡 大气污染物 周末效应 反周末效应 

分 类 号：X823[环境科学与工程—环境工程]