Size−resolved source apportionment of particulate matter from a megacity in northern China based on one-year measurement of inorganic and organic components

2021 ◽  
pp. 117932
Author(s):  
Yingze Tian ◽  
Roy M. Harrison ◽  
Yinchang Feng ◽  
Zongbo Shi ◽  
Yongli Liang ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Source Apportionment ◽  
Northern China ◽  
Organic Components ◽  
One Year ◽  
Inorganic And Organic

Source apportionment of airborne particulate matter using inorganic and organic species as tracers

2012 ◽  
Vol 55 ◽  
pp. 525-532 ◽  
Author(s):  
Yungang Wang ◽  
Philip K. Hopke ◽  
Xiaoyan Xia ◽  
Oliver V. Rattigan ◽  
David C. Chalupa ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Source Apportionment ◽  
Airborne Particulate Matter ◽  
Airborne Particulate ◽  
Organic Species ◽  
Inorganic And Organic

scholarly journals The 2013 severe haze over the southern Hebei, China: model evaluation, source apportionment, and policy implications

2013 ◽  
Vol 13 (11) ◽  
pp. 28395-28451 ◽  
Author(s):  
L. T. Wang ◽  
Z. Wei ◽  
J. Yang ◽  
Y. Zhang ◽  
F. F. Zhang ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Source Apportionment ◽  
Model Evaluation ◽  
Large Fraction ◽  
Northern China ◽  
Policy Implications ◽  
Fine Grid ◽  
Regional Sources ◽  
Haze Pollution

Abstract. Extremely severe and persistent haze occurred in January 2013 over the eastern and northern China. The record-breaking high concentrations of fine particulate matter (PM2.5) of more than 700 μg m−3 on hourly average and the persistence of the episodes have raised widespread, considerable public concerns. During that period, seven of the top ten polluted cities in China were within Hebei Province. The three cities in southern Hebei, Shijiazhuang, Xingtai, and Handan, have been listed as the top three polluted cities according to the statistics for the first half year of 2013. In this study, the Mesoscale Modeling System Generation 5 (MM5) and the Models-3/Community Multiscale Air Quality (CMAQ) modeling system are applied to simulate the 2013 severe winter regional hazes in East Asia and the northern China at horizontal grid resolutions of 36 and 12 km, respectively, using the Multi-resolution Emission Inventory of China (MEIC). The source contributions of major source regions and sectors to PM2.5 concentrations in the three most-polluted cities in southern Hebei are quantified aiming at the understanding of the sources of the severe haze pollution in this region, and the results are compared with December 2007, the haziest month in 2001–2010. Model evaluation against meteorological and air quality observations indicates an overall acceptable performance and the model tends to underpredict PM2.5 and coarse particulate matter (PM10) concentrations during the extremely severe polluted episodes. The MEIC inventory is proved to be a good estimation in terms of total emissions of cities but uncertainties exist in the spatial allocations of emissions into fine grid resolutions within cities. The source apportionment shows that emissions from the northern Hebei and the Beijing–Tianjin city cluster are two major regional contributors to the pollution in January 2013 in Shijiazhuang, comparing with those from Shanxi and the northern Hebei for December 2007. For Xingtai and Handan, the emissions from the northern Hebei and Henan are important. The industrial and domestic sources are the most significant local contributors, and the domestic and agricultural emissions from Shandong and Henan are unnegligible regional sources, especially for Xingtai and Handan. Even in the top two haziest months (i.e., January 2013 and December 2007), a large fraction of PM2.5 in the three cities may originate from quite different regional sources. These results indicate the importance of establishing a regional joint framework of policymaking and action system to effectively mitigate air pollution in this area, not only over Beijing–Tianjin–Hebei area, but also surrounding provinces such as Henan, Shandong, and Shanxi.

scholarly journals The 2013 severe haze over southern Hebei, China: model evaluation, source apportionment, and policy implications

2014 ◽  
Vol 14 (6) ◽  
pp. 3151-3173 ◽  
Author(s):  
L. T. Wang ◽  
Z. Wei ◽  
J. Yang ◽  
Y. Zhang ◽  
F. F. Zhang ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Source Apportionment ◽  
Model Evaluation ◽  
Large Fraction ◽  
Northern China ◽  
Policy Implications ◽  
Fine Grid ◽  
Regional Sources ◽  
Haze Pollution

Abstract. Extremely severe and persistent haze occurred in January 2013 over eastern and northern China. The record-breaking high concentrations of fine particulate matter (PM2.5) of more than 700 μg m−3 on hourly average and the persistence of the episodes have raised widespread, considerable public concerns. During that period, 7 of the top 10 polluted cities in China were within the Hebei Province. The three cities in southern Hebei (Shijiazhuang, Xingtai, and Handan) have been listed as the top three polluted cities according to the statistics for the first half of the year 2013. In this study, the Mesoscale Modeling System Generation 5 (MM5) and the Models-3/Community Multiscale Air Quality (CMAQ) modeling system are applied to simulate the 2013 severe winter regional hazes in East Asia and northern China at horizontal grid resolutions of 36 and 12 km, respectively, using the Multi-resolution Emission Inventory for China (MEIC). The source contributions of major source regions and sectors to PM2.5 concentrations in the three most polluted cities in southern Hebei are quantified by aiming at the understanding of the sources of the severe haze pollution in this region, and the results are compared with December 2007, the haziest month in the period 2001–2010. Model evaluation against meteorological and air quality observations indicates an overall acceptable performance and the model tends to underpredict PM2.5 and coarse particulate matter (PM10) concentrations during the extremely polluted episodes. The MEIC inventory is proven to be a good estimation in terms of total emissions of cities but uncertainties exist in the spatial allocations of emissions into fine grid resolutions within cities. The source apportionment shows that emissions from northern Hebei and the Beijing-Tianjin city cluster are two major regional contributors to the pollution in January 2013 in Shijiazhuang, compared with those from Shanxi and northern Hebei for December 2007. For Xingtai and Handan, the emissions from northern Hebei and Henan are important. The industrial and domestic sources are the most significant local contributors, and the domestic and agricultural emissions from Shandong and Henan are non-negligible regional sources, especially for Xingtai and Handan. Even in the top two haziest months (i.e., January 2013 and December 2007), a large fraction of PM2.5 in the three cities may originate from quite different regional sources. These results indicate the importance of establishing a regional joint framework of policymaking and action system to effectively mitigate air pollution in this area, not only over the Beijing-Tianjin-Hebei area, but also surrounding provinces such as Henan, Shandong, and Shanxi.

scholarly journals Measurement Report: Size distributions of inorganic and organic components in particulate matter from a megacity in northern China: dependence upon seasons and pollution levels

2020 ◽  
Author(s):  
Yingze Tian ◽  
Yinchang Feng ◽  
Yongli Liang ◽  
Yixuan Li ◽  
Qianqian Xue ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Particulate Matter ◽  
Heterogeneous Reactions ◽  
Diagnostic Ratios ◽  
Large Contribution ◽  
Size Distributions ◽  
Pollution Levels ◽  
Organic Components ◽  
Coarse Mode ◽  
Inorganic And Organic

Abstract. Size distributions of inorganic and organic components in particulate matter (PM) provide critical information on its sources, fate and pollution processes. Here, ions, elements, carbon fractions, n-alkanes, polycyclic aromatic hydrocarbons (PAHs), hopanes and steranes in size-resolved (9 stages) PM were analyzed during one year in a typical northern Chinese industrial megacity (Tianjin). We found that the concentrations of organic carbon fraction OC3, NO3− (or SO42−) and the sum of crustal elements were the highest in the pseudo-ultrafine ( 2.1 μm) modes, respectively. The diagnostic ratios of organic components consistently suggest that the traffic influence was stronger during summer and coal combustion during winter. Nitrate and high molecular weight PAHs were concentrated in the fine mode during winter, while nitrate and low molecular weight PAHs showed bimodal distributions especially during summer due to repartitioning. Long-chain n-alkanes showed a peak in the coarse mode during spring and summer, indicating a relatively stronger vegetation source and resuspended dust. Furthermore, we found a major difference in the size distribution of aerosol components during heavy pollution episodes (PM10 > 233 μg m−3) in different seasons: in spring, OC fractions, 4- and 5-ring PAHs, hopanes and C18–C33 n-alkanes were enhanced at 1.1–3.3 μm, implying that they may arise from local combustion sources which emit relatively large particles; in summer PM mass, SO42−, NH4+, Al, and C26–C33 n-alkanes were enhanced mainly in the coarse mode, peaking at 5.8–9.0 μm, indicating a large contribution from resuspended dust or heterogeneous reactions on dusts; in the winter and autumn, NO3− was significantly enhanced followed by SO42−, NH4+, OC and EC with their peaks shifting from 0.43–0.65 μm to 0.65–2.1 μm, indicating strong atmospheric processing. These results reveal that the size distributions of inorganic and organic aerosol components are dependent on the seasons and pollution levels as a result of the differing sources and physicochemical processes.

Source apportionment of particulate matter in China

2013 ◽  
Author(s):  
Baoqing Wang ◽  
Deqing Wang ◽  
Qitao Ma ◽  
Shuai Yin ◽  
Shu Yao
Keyword(s):  
Particulate Matter ◽  
Source Apportionment

INORGANIC AND ORGANIC COMPONENTS OF TOOTH STRUCTURE*

2006 ◽  
Vol 85 (1) ◽  
pp. 110-132 ◽  
Author(s):  
Finn Brudevold ◽  
Luville T. Steadman ◽  
Frank A. Smith
Keyword(s):  
Tooth Structure ◽  
Organic Components ◽  
Inorganic And Organic

scholarly journals Organic aerosol source apportionment by offline-AMS over a full year in Marseille

2017 ◽  
Author(s):  
Carlo Bozzetti ◽  
Imad El Haddad ◽  
Dalia Salameh ◽  
Kaspar Rudolf Daellenbach ◽  
Paola Fermo ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Air Quality ◽  
Mediterranean Sea ◽  
Source Apportionment ◽  
Organic Aerosol ◽  
Aerodynamic Diameter ◽  
Aerosol Mass Spectrometer ◽  
Aerosol Mass ◽  
Aerosol Source

Abstract. We investigated the seasonal trends of OA sources affecting the air quality of Marseille (France) which is the largest harbor of the Mediterranean Sea. This was achieved by measurements of nebulized filter extracts using an aerosol mass spectrometer (offline-AMS). PM2.5 (particulate matter with an aerodynamic diameter

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