摘要
选取2016—2022年攀枝花市环境空气质量监测数据,基于年度、季度、月度、小时时间尺度评价环境空气质量综合指数贡献率。结果表明,攀枝花市污染类型已由传统的单一工业型污染转变为复合型污染,且污染物在不同时间尺度下的分布特征明显。从季度尺度来看,第一季度细颗粒物(PM_(2.5))综合指数贡献率较大,第二和第三季度臭氧(O_(3))综合指数贡献率较大,第四季度二氧化氮(NO_(2))及PM_(2.5)综合指数贡献率较大。从月度尺度来看,O_(3)在3—8月的贡献较大,PM_(2.5)、NO_(2)、可吸入颗粒物(PM_(10))、一氧化碳(CO)、二氧化硫(SO_(2))在1—2月及11—12月的贡献较大。从小时尺度来看,O_(3)在13—19点贡献较大,PM_(10)、PM_(2.5)、CO在8—13点贡献较大,SO_(2)在9—13点贡献较大,NO_(2)在8—12点及20—24点贡献较大。结合上述研究结果,建议攀枝花市按不同的时间尺度有针对性地实施大气污染防控,从而进一步降低环境空气质量综合指数,提升城市空气质量排名。
The ambient air quality monitoring data of Panzhihua City from 2016 to 2022 were selected to evaluate the contribution rate of the ambient air quality comprehensive index based on the annual,quarterly,monthly and hourly time scales.The results showed that pollution type of Panzhihua City had gradually changed from traditional single industrial pollution to compound pollution,and the distribution characteristics of pollutants at different time scales were obvious.At the quarterly scale,the composite index contribution rate of PM_(2.5) in the first quarter,O_(3) in the second and third quarters,NO_(2) and PM_(2.5) in the fourth quarter was larger.O_(3) contributed more in March-August.The contributions of PM_(2.5),NO_(2),PM_(10),CO and SO_(2) were greater in January-February and November-December.At the hourly scale,O_(3) contributed more from 13 to 19 o clock,PM_(10),PM_(2.5) and CO contributed more from 8 to 13 o clock,SO_(2) contributed more from 9 to 13 o clock,and NO_(2) contributed more from 8 to 12 o clock and 20 to 24 o clock.Based on the above research results,this paper suggested that Panzhihua should implement air pollution prevention and control according to different time scales in order to further reduce the comprehensive index of ambient air quality and improve the ranking of urban air quality.
作者
代佼
杨玖
陈美芳
孙建春
宗仁琴
DAI Jiao;YANG Jiu;CHEN Meifang;SUN Jianchun;ZONG Renqin(Panzhihua East District of Ecology and Environmental Monitoring Station,Panzhihua 617000,China;Panzhihua Ecological and Environmental Science Society,Panzhihua 617000,China;Panzhihua Ecology and Environment Monitoring Center Station of Sichuan Province,Panzhihua 617000,China;Panzhihua Miyi County Ecology and Environment Monitoring Station,Panzhihua 617200,China)
出处
《中国环境监测》
CAS
CSCD
北大核心
2023年第S01期52-58,共7页
Environmental Monitoring in China
基金
攀枝花市2022年度市级指导性科技计划项目(2022ZD-S-10)。
关键词
时间尺度
综合指数贡献率
大气污染特征
攀枝花
time scale
composite index contribution rate
air pollution characteristics
Panzhihua
