PM source apportionment and trace metallic aerosol affinities during atmospheric pollution episodes: a case study from Puertollano, Spain

2006 ◽  
Vol 8 (10) ◽  
pp. 1060-1068 ◽  
Author(s):  
Teresa Moreno ◽  
Xavier Querol ◽  
Andrés Alastuey ◽  
Saúl García do Santos ◽  
Rosalia Fernández Patier ◽  
...  
Keyword(s):  
Source Apportionment ◽  
Atmospheric Pollution ◽  
Pollution Episodes

Evaluation of regional transport of PM2.5 during severe atmospheric pollution episodes in the western Yangtze River Delta, China

2021 ◽  
Vol 293 ◽  
pp. 112827
Author(s):  
Ishaq Dimeji Sulaymon ◽  
Yuanxun Zhang ◽  
Jianlin Hu ◽  
Philip K. Hopke ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Atmospheric Pollution ◽  
Yangtze River ◽  
Yangtze River Delta ◽  
River Delta ◽  
Regional Transport ◽  
Pollution Episodes

scholarly journals Understanding temporary reduction in atmospheric pollution and its impacts on coastal aquatic system during COVID-19 lockdown: a case study of South Asia

2021 ◽  
Vol 12 (1) ◽  
pp. 560-580
Author(s):  
Muhammad Shafeeque ◽  
Arfan Arshad ◽  
Ahmed Elbeltagi ◽  
Abid Sarwar ◽  
Quoc Bao Pham ◽  
...  
Keyword(s):  
South Asia ◽  
Atmospheric Pollution ◽  
Aquatic System ◽  
Temporary Reduction

scholarly journals An Integrated Method for Factor Number Selection of PMF Model: Case Study on Source Apportionment of Ambient Volatile Organic Compounds in Wuhan

Atmosphere ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 390 ◽  
Author(s):  
Fenjuan Wang ◽  
Zhenyi Zhang ◽  
Costanza Acciai ◽  
Zhangxiong Zhong ◽  
Zhaokai Huang ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Source Apportionment ◽  
Correlation Coefficient ◽  
Organic Compounds ◽  
Industrial Emissions ◽  
Integrated Method ◽  
Pmf Model ◽  
Volatile Organic ◽  
Measurement Period

The positive matrix factorization (PMF) model is widely used for source apportionment of volatile organic compounds (VOCs). The question about how to select the proper number of factors, however, is rarely studied. In this study, an integrated method to determine the most appropriate number of sources was developed and its application was demonstrated by case study in Wuhan. The concentrations of 103 ambient volatile organic compounds (VOCs) were measured intensively using online gas chromatography/mass spectrometry (GC/MS) during spring 2014 in an urban residential area of Wuhan, China. During the measurement period, the average temperature was approximately 25 °C with very little domestic heating and cooling. The concentrations of the most abundant VOCs (ethane, ethylene, propane, acetylene, n-butane, benzene, and toluene) in Wuhan were comparable to other studies in urban areas in China and other countries. The newly developed integrated method to determine the most appropriate number of sources is in combination of a fixed minimum threshold value for the correlation coefficient, the average weighted correlation coefficient of each species, and the normalized minimum error. Seven sources were identified by using the integrated method, and they were vehicular emissions (45.4%), industrial emissions (22.5%), combustion of coal (14.7%), liquefied petroleum gas (LPG) (9.7%), industrial solvents (4.4%), and pesticides (3.3%) and refrigerants. The orientations of emission sources have been characterized taking into account the frequency of wind directions and contributions of sources in each wind direction for the measurement period. It has been concluded that the vehicle exhaust contribution is greater than 40% distributed in all directions, whereas industrial emissions are mainly attributed to the west southwest and south southwest.

scholarly journals An evaluation of source apportionment of fine OC and PM2.5 by multiple methods: APHH-Beijing campaigns as a case study

2021 ◽  
Author(s):  
Jingsha Xu ◽  
Deepchandra Srivastava ◽  
Xuefang Wu ◽  
Siqi Hou ◽  
Tuan V. Vu ◽  
...  
Keyword(s):  
Source Apportionment ◽  
Multiple Source ◽  
Multiple Methods ◽  
Apportionment Methods

This paper reports an evaluation of multiple source apportionment methods for OC and PM2.5.

Development and Application of an Urban Tree Air Quality Score for Photochemical Pollution Episodes Using the Birmingham, United Kingdom, Area as a Case Study

2005 ◽  
Vol 39 (17) ◽  
pp. 6730-6738 ◽  
Author(s):  
Rossa G. Donovan ◽  
Hope E. Stewart ◽  
Susan M. Owen ◽  
A. Robert MacKenzie ◽  
C. Nicholas Hewitt
Keyword(s):  
United Kingdom ◽  
Air Quality ◽  
Quality Score ◽  
Photochemical Pollution ◽  
Urban Tree ◽  
Pollution Episodes

Outdoor PM10 source apportionment in metropolitan cities—a case study

2015 ◽  
Vol 187 (2) ◽  
Author(s):  
Atefeh Kholdebarin ◽  
Aida Biati ◽  
Faramarz Moattar ◽  
Seyed Mahmoud Shariat
Keyword(s):  
Source Apportionment ◽  
Metropolitan Cities ◽  
Outdoor Pm10

Intense winter atmospheric pollution episodes affecting the Western Mediterranean

2010 ◽  
Vol 408 (8) ◽  
pp. 1951-1959 ◽  
Author(s):  
Jorge Pey ◽  
Noemí Pérez ◽  
Xavier Querol ◽  
Andrés Alastuey ◽  
Michael Cusack ◽  
...  
Keyword(s):  
Atmospheric Pollution ◽  
Western Mediterranean ◽  
Pollution Episodes
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