典型文献
Variations in traffic-related polycyclic aromatic hydrocarbons in PM2.5 in Kanazawa,Japan,after the implementation of a new vehicle emission regulation
文献摘要：
A three-year sampling campaign was conducted at a roadside air pollution monitoring sta-tion in the urban area of Kanazawa,Japan.Due to a new emission regulation,PAHs levels decreased over the sampling campaign,exhibiting values of 706±413 pg/m3 in 2017,559±384 pg/m3 in 2018,and 473±234 pg/m3 in 2019.In each year,similar seasonal variations in PAHs levels were observed,with higher levels observed in winter and lower levels in sum-mer.Among the PAHs isomer ratios,we observed that the ratio of benzo[b]fluoranthene(BbF)and benzo[k]fluoranthene(BkF),[BbF]/([BbF]+[BkF]),and the ratio of indeno[1,2,3-cd]pyrene(IDP)and benzo[ghi]perylene(BgPe),[IDP]/([BgPe]+[IDP]),showed stability over the sampling campaign and were less affected by the new emission regulation,seasonal variations,and regional characteristics.When using the combined ratio ranges of 0.66-0.80([BbF]/([BbF]+[BkF])and 0.26-0.49([IDP]/([BgPe]+[IDP]),traffic emissions were clearly dis-tinguished from other PAHs emission sources.Principal component analysis(PCA)and posi-tive matrix factorization(PMF)were also performed to further analyse the characteristics of traffic-related PAHs.Overall,this study affirmed the effectiveness of the new emission reg-ulation in the reduction of PAHs emissions and provided a combined range for identifying PAHs traffic emission sources.
文献关键词：
中图分类号：
作者姓名：
Wanli Xing;Lu Yang;Hao Zhang;Xuan Zhang;Yan Wang;Pengchu Bai;Lulu Zhang;Kazuichi Hayakawa;Seiya Nagao;Ning Tang
作者机构：
Graduate School of Medical Sciences,Kanazawa University,Kakuma-machi,Kanazawa 920-1192,Japan;Institute of Nature and Environmental Technology,Kanazawa University,Kakuma-machi,Kanazawa 920-1192,Japan;Institute of Medical,Pharmaceutical and Health Sciences,Kanazawa University,Kakuma-machi,Kanazawa 920-1192,Japan
文献出处：
引用格式：
[1]Wanli Xing;Lu Yang;Hao Zhang;Xuan Zhang;Yan Wang;Pengchu Bai;Lulu Zhang;Kazuichi Hayakawa;Seiya Nagao;Ning Tang-.Variations in traffic-related polycyclic aromatic hydrocarbons in PM2.5 in Kanazawa,Japan,after the implementation of a new vehicle emission regulation)[J].环境科学学报（英文版）,2022(11):38-47
A类：
Kanazawa,indeno,BgPe,tinguished
B类：
Variations,traffic,related,polycyclic,aromatic,hydrocarbons,PM2,Japan,after,implementation,new,vehicle,regulation,three,year,sampling,campaign,was,conducted,roadside,air,pollution,monitoring,urban,area,Due,PAHs,levels,decreased,over,exhibiting,values,pg,In,each,similar,seasonal,variations,were,observed,higher,winter,lower,sum,Among,isomer,ratios,that,benzo,fluoranthene,BbF,BkF,cd,pyrene,IDP,ghi,perylene,showed,stability,less,affected,by,regional,characteristics,When,using,combined,ranges,emissions,clearly,dis,from,other,sources,Principal,component,analysis,posi,matrix,factorization,PMF,also,performed,further,analyse,Overall,this,study,affirmed,effectiveness,reduction,provided,identifying
AB值：
0.462285
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