scholarly journals Emissions of Polycyclic Aromatic Hydrocarbons from Natural Gas Extraction into Air

2016 ◽  
Vol 50 (14) ◽  
pp. 7921-7929 ◽  
Author(s):  
L. Blair Paulik ◽  
Carey E. Donald ◽  
Brian W. Smith ◽  
Lane G. Tidwell ◽  
Kevin A. Hobbie ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Natural Gas ◽  
Aromatic Hydrocarbons ◽  
Gas Extraction ◽  
Polycyclic Aromatic ◽  
Natural Gas Extraction

Seasonal Trend And Source Identification of Polycyclic Aromatic Hydrocarbons Associated With Fine Particulate Matters (PM2.5 ) In Isfahan City, Iran Using Diagnostic Ratio and PMF Model

2021 ◽  
Author(s):  
Mohsen Soleimani ◽  
Zohreh Ebrahimi ◽  
Nourollah Mirghaffari ◽  
Hossein Moradi ◽  
Nasibeh Amini ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Natural Gas ◽  
Aromatic Hydrocarbons ◽  
Source Identification ◽  
Diagnostic Ratios ◽  
Particulate Matters ◽  
Gas Combustion ◽  
Industrial Activities ◽  
Pmf Model ◽  
Polycyclic Aromatic

Abstract Particulate matters (PMs) and their associated chemical compounds such as polycyclic aromatic hydrocarbons (PAHs) are important factors to evaluate air pollution and its health impacts particularly in developing countries. Source identification of these compounds can be used for air quality management. The aim of this study was to identify the sources of PM2.5-bound PAHs in Isfahan city, a metropolitan and industrialized area in central Iran. The PM2.5 samples were collected at 50 sites during one year. Source identification and apportionment of PAHs were carried out using diagnostic ratios (DRs) of PAHs and positive matrix factorization (PMF) model. The results showed that the concentrations of PM2.5 ranged from 8 to 291 µg/m3 with an average of 60.2 ± 53.9 µg/m3 whereas the sum of concentrations of the 19 PAH compounds (ƩPAHs) ranged from 0.3 to 61.4 ng/m3 with an average of 4.65 ± 8.54 ng/m3. The PAH compounds showed their highest and lowest concentrations in fall and summer, respectively. Applying DRs, suggested that the source of the PAHs were mainly from fuel combustion. The main sources identified by the PMF model were gasoline combustion (28 %) followed by diesel combustion (22 %), natural gas combustion (17 %), evaporative-uncombusted (13 %), industrial activities (11 %), and unknown sources (9 %). The results revealed that in addition to transportation and industrial activities, combustion of natural gas for heating systems as one of the PAHs source in PM2.5 should be managed in the metropolitan area.

scholarly journals Source Apportionment of Particle Bound Polycyclic Aromatic Hydrocarbons at an Industrial Location in Agra, India

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Anita Lakhani
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Natural Gas ◽  
Aromatic Hydrocarbons ◽  
Principal Component ◽  
Ambient Air ◽  
Mean Value ◽  
Diagnostic Ratios ◽  
Compressed Natural Gas ◽  
Polycyclic Aromatic ◽  
Us Epa

16 US EPA priority polycyclic aromatic hydrocarbons (PAHs) were quantified in total suspended ambient particulate matter (TSPM) collected from an industrial site in Agra (India) using gas chromatography. The major industrial activities in Agra are foundries that previously used coal and coke as fuel in cupola furnaces. These foundries have now switched over to natural gas. In addition, use of compressed natural gas has also been promoted and encouraged in automobiles. This study attempts to apportion sources of PAH in the ambient air and the results reflect the advantages associated with the change of fuel. The predominant PAHs in TSPM include high molecular weight (HMW) congeners BghiP, DbA, IP, and BaP. The sum of 16 priority PAHs had a mean value of 72.7 ± 4.7 ng m−3. Potential sources of PAHs in aerosols were identified using diagnostic ratios and principal component analysis. The results reflect a blend of emissions from diesel and natural gas as the major sources of PAH in the city along with contribution from emission of coal, coke, and gasoline.

The Assessment of Contamination and Source of Polycyclic Aromatic Hydrocarbons from the Sediments of the Someş River

2019 ◽  
Vol 64 (1) ◽  
pp. 55-67
Author(s):  
Vlad Pӑnescu ◽  
◽  
Mihaela Cӑtӑlina Herghelegiu ◽  
Sorin Pop ◽  
Mircea Anton ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic
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