scholarly journals Impact of firework on nitrooxy-organosulfates in urban aerosols during Chinese New Year Eve

2021 ◽  
Author(s):  
Qiaorong Xie ◽  
Sihui Su ◽  
Jing Chen ◽  
Yuqing Dai ◽  
Siyao Yue ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Molecular Level ◽  
Urban Atmosphere ◽  
Anthropogenic Emissions ◽  
Formation Processes ◽  
Urban Aerosols ◽  
Nighttime Chemistry ◽  
Volatile Organic ◽  
New Year’S Eve

Abstract. Little is known about the formation processes of nitrooxy-organosulfates (nitrooxy-OSs) by nighttime chemistry. Here we characterize nitrooxy-OSs at a molecular level in firework-related aerosols in urban Beijing during Chinese New Year. High-molecular-weight nitrooxy-OSs with relatively low H / C and O / C ratios and high unsaturation, which are potentially aromatic-like nitrooxy-OSs, considerably increased during the New Year’s Eve. We find that large quantities of carboxylic-rich alicyclic molecules possibly formed by nighttime reactions. The sufficient abundance of aliphatic-like and aromatic-like nitrooxy-OSs demonstrates that both anthropogenic and biogenic volatile organic compounds are essential precursors of urban secondary organic aerosols (SOA). Besides, more than 98 % of nitrooxy-OSs were extremely low-volatile organic compounds that could easily partition into and consist in the particle phase, and affected the volatility, hygroscopicity, and even toxicity of urban aerosols. Our study provides new insights into the formation of nitrooxy-organosulfates from anthropogenic emissions through nighttime chemistry in the urban atmosphere.

scholarly journals Increase of nitrooxy organosulfates in firework-related urban aerosols during Chinese New Year's Eve

2021 ◽  
Vol 21 (14) ◽  
pp. 11453-11465
Author(s):  
Qiaorong Xie ◽  
Sihui Su ◽  
Jing Chen ◽  
Yuqing Dai ◽  
Siyao Yue ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Molecular Level ◽  
Urban Atmosphere ◽  
Anthropogenic Emissions ◽  
Formation Processes ◽  
Particle Phase ◽  
Urban Aerosols ◽  
Nighttime Chemistry ◽  
Volatile Organic ◽  
New Year’S Eve

Abstract. Little is known about the formation processes of nitrooxy organosulfates (OSs) by nighttime chemistry. Here we characterize nitrooxy OSs at a molecular level in firework-related aerosols in urban Beijing during Chinese New Year. High-molecular-weight nitrooxy OSs with relatively low H / C and O / C ratios and high unsaturation are potentially aromatic-like nitrooxy OSs. They considerably increased during New Year's Eve, affected by the firework emissions. We find that large quantities of carboxylic-rich alicyclic molecules possibly formed by nighttime reactions. The sufficient abundance of aliphatic-like and aromatic-like nitrooxy OSs in firework-related aerosols demonstrates that anthropogenic volatile organic compounds are important precursors of urban secondary organic aerosols (SOAs). In addition, more than 98 % of those nitrooxy OSs are extremely low-volatility organic compounds that can easily partition into and consist in the particle phase and affect the volatility, hygroscopicity, and even toxicity of urban aerosols. Our study provides new insights into the formation of nitrooxy organosulfates from anthropogenic emissions through nighttime chemistry in the urban atmosphere.

Brown Carbon Formation from Nighttime Chemistry of Unsaturated Heterocyclic Volatile Organic Compounds

2019 ◽  
Vol 6 (3) ◽  
pp. 184-190 ◽  
Author(s):  
Huanhuan Jiang ◽  
Alexander L. Frie ◽  
Avi Lavi ◽  
Jin Y. Chen ◽  
Haofei Zhang ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Carbon Formation ◽  
Brown Carbon ◽  
Nighttime Chemistry ◽  
Volatile Organic

Analysis of Volatile Organic Compounds (VOCs) in the Urban Atmosphere of Beijing

2008 ◽  
Vol 41 (10) ◽  
pp. 997-1002 ◽  
Author(s):  
Jiayu Xu ◽  
Yang Gao ◽  
Shigehisa Uchiyama ◽  
Toshiaki Sodesawa
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Urban Atmosphere ◽  
Volatile Organic

scholarly journals Speciation of anthropogenic emissions of non-methane volatile organic compounds: a global gridded data set for 1970–2012

2017 ◽  
Author(s):  
Ganlin Huang ◽  
Rosie Brook ◽  
Monica Crippa ◽  
Greet Janssens-Maenhout ◽  
Christian Schieberle ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Chemical Species ◽  
Road Transport ◽  
Individual Species ◽  
Anthropogenic Emissions ◽  
Emission Data ◽  
Data Set ◽  
Volatile Organic ◽  
Species Groups

Abstract. Non-methane volatile organic compounds (NMVOC) include a large number of chemical species which differ significantly in their chemical characteristics and thus in their impacts on ozone and secondary organic aerosols formation. It is important that chemical transport models (CTMs) simulate the chemical transformation of the different NMVOC species in the troposphere consistently. In most emission inventories, however, only total NMVOC emissions are reported, which need to be decomposed into classes to fit the requirements of CTMs. For instance, the Emissions Database for Global Atmospheric Research (EDGAR) provides spatially resolved global anthropogenic emissions of total NMVOC. In this study the EDGAR NMVOC inventory was revised and extended in time and in sectors. Moreover the new version of NMVOC emission data in the EDGAR database were disaggregated on a high sector resolution to individual species or species groups, thus enhancing the usability of the NMVOC emission data by the modelling community. Region- and source-specific speciation profiles of NMVOC species or species groups, are compiled and mapped to EDGAR processes (high resolution of sectors), with corresponding quality codes specifying the quality of the mapping. Individual NMVOC species in different profiles are aggregated to 25 species groups, in line with the common classification of the Global Emissions Initiative (GEIA). Global annual grid maps with a resolution of 0.1° × 0.1° for the period 1970–2012 are produced by sector and species. Furthermore, trends of NMVOC composition are analysed taking road transport and residential sources in Germany and the United Kingdom (UK) as examples.

The Urban Atmosphere as a Non-Point Source for the Transport of MTBE and Other Volatile Organic Compounds (VOCs) to Shallow Groundwater

1997 ◽  
Vol 31 (10) ◽  
pp. 2821-2828 ◽  
Author(s):  
James F. Pankow ◽  
Neil R. Thomson ◽  
Richard L. Johnson ◽  
Arthur L. Baehr ◽  
John S. Zogorski
Keyword(s):  
Volatile Organic Compounds ◽  
Point Source ◽  
Organic Compounds ◽  
Shallow Groundwater ◽  
Urban Atmosphere ◽  
Volatile Organic
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