Mehanizmi uklanjanja lako isparljivih monoaromatičnih ugljovodonika (BTEX) iz ambijentalnog vazduha mokrom depozicijom
Mechanisms of scavenging monoaromatic hydrocarbons (BTEX) from ambient air by wet deposition
Author
Šoštarić, Andrej I.Mentor
Gržetić, IvanCommittee members
Popović, AleksandarTešević, Vele
Mijić, Zoran
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Show full item recordAbstract
Lako isparljiva organska jedinjenja predstavljaju jednu od najznačajnijih klasa
jedinjenja koja se sa površine Zemlje emituju u troposferu. Monoaromatični
ugljovodonici, benzen, toluen, etilbenzen i izomeri ksilena (BTEX) su lako isparljiva
organska jedinjenja koja dominiraju u urbanim i industrijski razvijenim sredinama i
mogu se smatrati nosiocima zagađenja poreklom iz antropogenih izvora. Pored činjenice
da se BTEX, nakon zabrane korišćenja tetraetil olova, masovno koriste kao aditivi
bezolovnim motornim benzinima, postoje i brojne druge antropogene aktivnosti koje
dovode do njihove emisije u troposferu. Zbog činjenice da su BTEX zagađujuće
supstance koje mogu imati direktan negativan uticaj na zdravlje ljudi i životnu sredinu,
kao i indirektan, formiranjem zagađujućih supstanci druge generacije, od posebnog
značaja je da se što bolje istraže svi procesi koji dovode do njihovog uklanjanja iz
troposfere. U skladu sa tim, osnovni cilj ove disertacije bio je da se utvrde mehanizmi
ukla...njanja BTEX iz ambijentalnog vazduha mokrom depozicijom...
Volatile organic compounds (VOC) are one of the most important classes of compounds
emitted to the troposphere from the Earth surface. Monoaromatic hydrocarbons,
benzene and its alkyl derivates - toluene, ethylbenzene,and isomers of xylene, also
known as BTEX, are the most abundant among VOC emitted in urban and industrially
developed areas, and are often used as indicators of man-made pollution. Besides being
present in vehicle exhaust as a result of BTEX being petrol additives as well as fossil fuel
combustion products, BTEX are emitted from other sources related to anthropogenic
activities. BTEX have direct adverse effect on human health and environment, as well as
indirect, due to a fact that they are being important photochemical precursors for the
formation of the second generation of pollutants, which is why it is very important to
better understand all of the processes leading to BTEX removal from ambient air.
Accordingly, the aim of this dissertation was to determine mechanism...s of BTEX
scavenging from ambient air by wet deposition...