典型文献
Chemical characterization and source identification of PM2.5 in Luoyang after the clean air actions
文献摘要：
Luoyang is a typical heavy industrial city in China,with a coal-dominated energy structure and serious air pollution.Following the implementation of the clean air actions,the physic-ochemical characteristics and sources of PM2.5 have changed.A comprehensive study of PM2.5 was conducted from October 16,2019 to January 23,2020 to evaluate the effectiveness of previous control measures and further to provide theory basis for more effective policies in the future.Results showed that the aerosol pollution in Luoyang in autumn and win-ter is still serious with the average concentration of 91.1 μg/m3,although a large reduction(46.9％)since 2014.With the contribution of nitrate increased from 12.5％to 25.1％and sul-fate decreased from 16.7％to 11.2％,aerosol pollution has changed from sulfate-dominate to nitrate-dominate.High NO3-/SO42-ratio and the increasing of NO3-/SO42-ratio with the aggravation of pollution indicating vehicle exhaust playing an increasingly important role in PM2.5 pollution in Luoyang,especially in the haze processes.Secondary inorganic ions contributed significantly to the enhancement of PM2.5 during the pollution period.The high value of Cl-/Na+and EC concentration indicate coal combustion in Luoyang is still serious.The top three contributor sources were secondary inorganic aerosols(33.3％),coal combus-tion(13.6％),and industrial emissions(13.4％).Close-range transport from the western and northeastern directions were more important factors in air pollution in Luoyang during the sampling period.It is necessary to strengthen the control of coal combustion and reduce vehicle emissions in future policies.
文献关键词：
中图分类号：
作者姓名：
Min Xu;Zirui Liu;Bo Hu;Guangxuan Yan;Jianan Zou;Shuman Zhao;Jingxiang Zhou;Xianhui Liu;Xueping Zheng;Xiaoyan Zhang;Jing Cao;Mengshuang Guan;Yirong Lu;Yanyun Zhang
作者机构：
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry(LAPC),Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China;University of the Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory for Yellow Riuer and Huai River Water Environment and Pollution Control,Henan Key Laboratory for Environmental Pollution Control,School of Environment,Henan Normal University,Xinxiang 453007,China;Luoyang Eco-Environmental Monitoring Center of Henan Province,Luoyang 471002,China;Luoyang Radiation Environment Service Office,Luoyang 471002,China;3Clear Science&Technology Co.,Ltd,Beijing 100029,China
文献出处：
引用格式：
[1]Min Xu;Zirui Liu;Bo Hu;Guangxuan Yan;Jianan Zou;Shuman Zhao;Jingxiang Zhou;Xianhui Liu;Xueping Zheng;Xiaoyan Zhang;Jing Cao;Mengshuang Guan;Yirong Lu;Yanyun Zhang-.Chemical characterization and source identification of PM2.5 in Luoyang after the clean air actions)[J].环境科学学报（英文版）,2022(05):265-276
A类：
Luoyang
B类：
Chemical,characterization,identification,PM2,after,clean,air,actions,typical,heavy,industrial,city,China,coal,dominated,energy,structure,serious,pollution,Following,implementation,physic,ochemical,characteristics,sources,have,changed,comprehensive,study,was,conducted,from,October,January,evaluate,effectiveness,previous,control,measures,further,provide,theory,basis,more,policies,future,Results,showed,that,autumn,still,average,concentration,although,large,reduction,since,With,contribution,nitrate,increased,decreased,has,sulfate,High,NO3,SO42,aggravation,indicating,vehicle,exhaust,playing,increasingly,important,role,especially,haze,processes,Secondary,inorganic,contributed,significantly,enhancement,during,period,high,value,Na+and,EC,indicate,combustion,top,three,contributor,were,secondary,aerosols,emissions,Close,range,transport,western,northeastern,directions,factors,sampling,It,necessary,strengthen,reduce
AB值：
0.506324
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