典型文献
Formation mechanisms of nitrous acid(HONO)during the haze and non-haze periods in Beijing,China
文献摘要：
As an important precursor of hydroxyl radical(OH),nitrous acid(HONO)plays a significant role in atmospheric chemistry.Here,an observation of HONO and relevant air pollutants in an urban site of Beijing from 14 to 28 April,2017 was performed.Two distinct peaks of HONO concentrations occurred during the observation.In contrast,the concentration of particu-late matter in the first period(period Ⅰ)was significantly higher than that in the second period(period Ⅱ).Comparing to HONO sources in the two periods,we found that the direct vehicle emission was an essential source of the ambient HONO during both periods at night,especially in period Ⅱ.The heterogeneous reaction of NO2 was the dominant source in pe-riod Ⅰ,while the homogeneous reaction of NO with OH was more critical source at night in period Ⅱ.In the daytime,the heterogeneous reaction of NO2 was a significant source and was confirmed by the good correlation coefficients(R2)between the unknown sources(Punknown)with NO2,PM2.5,NO2×PM2.5 in period Ⅰ.Moreover,when solar radiation and OH radicals were considered to explore unknown sources in the daytime,the enhanced correlation of Punknown with photolysis rate of NO2 and OH(JNO2×OH)were 0.93 in period Ⅰ,0.95 in periodⅡ.These excellent correlation coefficients suggested that the unknown sources released HONO highly related to the solar radiation and the variation of OH radicals.
文献关键词：
中图分类号：
作者姓名：
Deng Lin;Shengrui Tong;Wenqian Zhang;Weiran Li;Fangjie Li;Chenhui Jia;Gen Zhang;Meifang Chen;Xinran Zhang;Zhen Wang;Maofa Ge;Xiang He
作者机构：
Key Laboratory of Oasis Ecology,College of Resource and Environment Sciences,Xinjiang University,Urumqi 830046,China;State Key Laboratory for Structural Chemistry of Unstable and Stable Species,Chinese Academy of Sciences Research/Education Center for Excellence in Molecular Sciences,Institute of Chemistry Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Chemistry,Liaoning University,Shenyang 110036,Liaoning,China;State Key Laboratory of Severe Weather&Key Laboratory for Atmospheric Chemistry of CMA,Institute of Atmospheric Composition,Chinese Academy of Meteorological Sciences,Beijing 100081,China;College of Chemistry and Material Science,Anhui Normal University,Wuhu 241000,China;Center for Excellence in Regional Atmospheric Environment,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China
文献出处：
引用格式：
[1]Deng Lin;Shengrui Tong;Wenqian Zhang;Weiran Li;Fangjie Li;Chenhui Jia;Gen Zhang;Meifang Chen;Xinran Zhang;Zhen Wang;Maofa Ge;Xiang He-.Formation mechanisms of nitrous acid(HONO)during the haze and non-haze periods in Beijing,China)[J].环境科学学报（英文版）,2022(04):343-353
A类：
riod,Punknown,JNO2
B类：
Formation,mechanisms,nitrous,acid,HONO,during,haze,periods,Beijing,China,important,precursor,hydroxyl,plays,role,atmospheric,chemistry,Here,observation,relevant,air,pollutants,urban,site,from,April,was,performed,Two,distinct,peaks,concentrations,occurred,In,contrast,particu,matter,first,significantly,higher,than,that,second,Comparing,sources,two,found,direct,vehicle,emission,essential,ambient,both,night,especially,heterogeneous,reaction,dominant,while,homogeneous,more,critical,daytime,confirmed,by,good,correlation,coefficients,between,PM2,Moreover,when,solar,radiation,radicals,were,considered,explore,enhanced,photolysis,rate,These,excellent,suggested,released,highly,related,variation
AB值：
0.432125
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