scholarly journals Water Soluble Organic Nitrogen (WSON) in Ambient Fine Particles Over a Megacity in South China: Spatiotemporal Variations and Source Apportionment

2017 ◽  
Vol 122 (23) ◽  
Author(s):  
Xu Yu ◽  
Qingqing Yu ◽  
Ming Zhu ◽  
Mingjin Tang ◽  
Sheng Li ◽  
...  
Keyword(s):  
Source Apportionment ◽  
South China ◽  
Organic Nitrogen ◽  
Fine Particles ◽  
Water Soluble ◽  
Spatiotemporal Variations ◽  
Soluble Organic Nitrogen

Filterable water-soluble organic nitrogen in fine particles over the southeastern USA during summer

2011 ◽  
Vol 45 (33) ◽  
pp. 6040-6047 ◽  
Author(s):  
Neeraj Rastogi ◽  
Xiaolu Zhang ◽  
Eric S. Edgerton ◽  
Ellery Ingall ◽  
Rodney J. Weber
Keyword(s):  
Organic Nitrogen ◽  
Fine Particles ◽  
Water Soluble ◽  
Southeastern Usa ◽  
Soluble Organic Nitrogen

Increases in the formation of water soluble organic nitrogen during Asian dust storm episodes

2021 ◽  
Vol 253 ◽  
pp. 105486
Author(s):  
Qingyang Liu ◽  
Yanjiu Liu ◽  
Qiang Zhao ◽  
Tingting Zhang ◽  
James J. Schauer
Keyword(s):  
Dust Storm ◽  
Organic Nitrogen ◽  
Asian Dust ◽  
Water Soluble ◽  
Asian Dust Storm ◽  
Soluble Organic Nitrogen

scholarly journals Atmospheric Water Soluble Organic Nitrogen (WSON) over marine environments: a global perspective

2014 ◽  
Vol 11 (7) ◽  
pp. 11361-11389 ◽  
Author(s):  
K. Violaki ◽  
J. Sciare ◽  
J. Williams ◽  
A. R. Baker ◽  
M. Martino ◽  
...  
Keyword(s):  
Organic Nitrogen ◽  
Eastern Mediterranean ◽  
Anthropogenic Activities ◽  
Water Soluble ◽  
Global Perspective ◽  
Marine Atmosphere ◽  
Marine Aerosols ◽  
Total Dissolved Nitrogen ◽  
Comprehensive Picture ◽  
Soluble Organic Nitrogen

Abstract. To obtain a comprehensive picture on the spatial distribution of water soluble organic nitrogen (WSON) in marine aerosols, samples were collected during research cruises in the tropical and south Atlantic Ocean and during a one year period (2005) over the southern Indian Ocean (Amsterdam island). Samples have been analyzed for both organic and inorganic forms of nitrogen and the factors controlling their levels have been examined. Fine mode WSON was found to play a significant role in the remote marine atmosphere with enhanced biogenic activity, with concentrations of WSON (11.3 ± 3.3 nmol N m–3) accounting for about 84% of the total dissolved nitrogen (TDN). Such levels are similar to those observed in the polluted marine atmosphere of the eastern Mediterranean (11.6 ± 14.0 nmol N m–3). Anthropogenic activities were found to be an important source of atmospheric WSON as evidenced by the ten times higher levels in the Northern Hemisphere (NH) than in the remote Southern Hemisphere (SH). Furthermore, the higher contribution of WSON to TDN (40%) in the SH, compared to the NH (20%), underlines the important role of organic nitrogen in remote marine areas. Finally, Sahara dust was also identified as a significant source of WSON in the coarse mode aerosols of the NH.

Origin of the water-soluble organic nitrogen in the maritime aerosol

2017 ◽  
Vol 167 ◽  
pp. 97-103 ◽  
Author(s):  
Kiyoshi Matsumoto ◽  
Yuya Yamamoto ◽  
Kotaro Nishizawa ◽  
Naoki Kaneyasu ◽  
Tomohisa Irino ◽  
...  
Keyword(s):  
Organic Nitrogen ◽  
Water Soluble ◽  
Soluble Organic Nitrogen

scholarly journals Chemical Composition and Source Apportionment of PM2.5 in Urban Areas of Xiangtan, Central South China

2019 ◽  
Vol 16 (4) ◽  
pp. 539 ◽  
Author(s):  
Xiaoyao Ma ◽  
Zhenghui Xiao ◽  
Lizhi He ◽  
Zongbo Shi ◽  
Yunjiang Cao ◽  
...  
Keyword(s):  
Source Apportionment ◽  
South China ◽  
Urban Areas ◽  
Inorganic Ions ◽  
Water Soluble ◽  
Total Carbon ◽  
Anthropogenic Sources ◽  
Vehicle Exhaust ◽  
Industrial Emissions ◽  
Wind Speeds

Xiangtan, South China, is characterized by year-round high relative humidity and very low wind speeds. To assess levels of PM2.5, daily samples were collected from 2016 to 2017 at two urban sites. The mass concentrations of PM2.5 were in the range of 30–217 µg/m3, with the highest concentrations in winter and the lowest in spring. Major water-soluble ions (WSIIs) and total carbon (TC) accounted for 58–59% and 21–24% of the PM2.5 mass, respectively. Secondary inorganic ions (SO42−, NO3−, and NH4+) dominated the WSIIs and accounted for 73% and 74% at the two sites. The concentrations of K, Fe, Al, Sb, Ca, Zn, Mg, Pb, Ba, As, and Mn in the PM2.5 at the two sites were higher than 40 ng/m3, and decreased in the order of winter > autumn > spring. Enrichment factor analysis indicates that Co, Cu, Zn, As, Se, Cd, Sb, Tl, and Pb mainly originates from anthropogenic sources. Source apportionment analysis showed that secondary inorganic aerosols, vehicle exhaust, coal combustion and secondary aerosols, fugitive dust, industrial emissions, steel industry are the major sources of PM2.5, contributing 25–27%, 21–22%, 19–21%, 16–18%, 6–9%, and 8–9% to PM2.5 mass.

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