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Title: RELATIONSHIP APPRAISAL OF PAHs IN AN URBAN ATMOSPHERIC AEROSOL WITH METEOROLOGICAL CONDITIONS, POLLUTION SOURCES AND OTHER POLLUTANTS
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RELATIONSHIP APPRAISAL OF PAHs IN AN URBAN ATMOSPHERIC AEROSOL WITH METEOROLOGICAL CONDITIONS, POLLUTION SOURCES AND OTHER POLLUTANTS
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1314-2704
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English
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21
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4.1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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The atmosphere is one of the environmental components, which living organisms utilize the most. However, in large urban agglomerations, the air often contains substances that can be dangerous to human health and ecosystems, especially if their concentrations exceed the legal norms. Although the mechanism of impact of the individual chemical compounds (SO2, NO2, O3, benzene, etc.), considered as pollutants is well known, it is still a challenge to clarify the composition and impact of the particulate matters, especially those with aerodynamic diameter bellow 2.5 microns (PM2.5). The objective of the current study, performed in the frame of project “CARBOAEROSOL”, is to determine the concentration of nineteen PAHs in airborne PM2.5 collected in the largest city in Bulgaria, i.e. Sofia, as a capital with a population of millions, and to establish their correlation with the meteorological parameters and other pollutants and to distinguish eventual sources of pollution. This study is of a particular interest as such detailed investigations with regards to PAHs have not been performed for Bulgaria. PM2.5 samplings, performed in wintertime, 2021, are conducted according to the standard EN 12341:2014. The subsequent analysis of PM2.5 bound PAHs is performed by GC–MS/MS in the Multiple Reaction Monitoring (MRM) mode. The obtained results reveal that for the sampling period total PM2.5 bound PAHs concentrations are in the range of 1.87 - 38.47 ng/m3, with an average ?PAHs concentration of 15.3±11.6 ng/m3 and an average ?BaPTEQ and ?BaPMEQ of 1.84 ±1.41 ng/m3 and 1.94 ±1.48 ng/m3, respectively. With regards to the relationship of PM2.5 bound PAHs to meteorological conditions and other pollutants, statistically significant correlations are found with pressure, temperature and dew point and benzene, NO2, NOx, CO and PM2.5 concentrations. Indicative data on pollution sources have also been obtained.
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conference
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
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21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
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Proceedings Paper
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STEF92 Technology
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SGEM International Multidisciplinary Scientific GeoConference
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
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327-334
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16 - 22 August, 2021
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website
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cdrom
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8093
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PM2.5 bound PAHs; urban air quality
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