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SPATIAL EVALUATION OF NO2, SO2, PM10 AND BTEX CONCENTRATIONS IN URBAN AMBIENT AIR
Autori: Dainius Paliulis
Data aparitiei: Martie / 2019
Revista: Environmental Engineering and Management JournalVol. 18Nr. 3
ISSN: 1843 - 3707
Pret: 25.00 RON    
N.A.

During the 2014-2015 period of environmental air quality research, concentrations of NO2, SO2 and BTEX (benzene, toluene,
ethylbenzene and xylenes) and PM10 were measured. In order to evaluate the spatial distribution of pollutants, 5 sampling sites in
Anykščiai city (Lithuania) were chosen. Measured values of NO2, SO2, PM10 and benzene were compared with limit values set
for these pollutants in ambient air according to 2008/50/EC and 2000/69/EC directives. Toluene, ethylbenzene, and xylenes
(ortho, meta, and para) were not included into the list of pollutants, which amount in ambient air is regulated according to
European Union criteria. These pollutants are regulated since July 1, 2007 according to national criteria of Lithuania. The NO2
concentrations in Anykščiai varied from 3.1–4.5 μg/m3. The SO2 concentration was found in the range of <0.3–3.7 μg/m3. PM10
concentration was found in the range of 10.0–29.0 μg/m3. Benzene concentrations in Anykščiai varied from 0.4 – 2.8 μg/m3,
toluene concentrations in Anykščiai varied from 0.9–2.8 μg/m3, ethylbenzene concentrations in Anykščiai varied from <0.4–1.8
μg/m3, xylenes concentrations in Anykščiai varied from 0.6–5.7 μg/m3. The annual average of NO2, SO2, PM10 and BTEX and
concentrations were below the permissible limits in all five places.



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