TY  - CONF
AU  - Radenković, Mirjana
AU  - Milošević, S.
AU  - Stanković, Srboljub
AU  - Joksić, J.
AU  - Onjia, Antonije
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12136
AB  - Natural uranium, consisting of 238U, 234U and 235U isotopes is present in the environment in low
concentrations especially in the atmosphere where it usually exists as a constituent of particulate
matter submicron conglomerates suspended in the air. In the case of contamination, uranium may be
present in the aerosol, being transferred to other areas by wind and again settled on the surface soil
with possible migration into deeper layers or resuspension under certain meteorological conditions.
Here results on the airborne uranium assessment based on the analysis of lichen species already
present or transplanted into contaminated areas will be presented. With that aim, different in situ
and transplanted epiphytic lichen species have been taken at selected locations in southern Serbia in
the stage of existing contamination by depleted uranium, during the clean-up activities and
afterwards, in all four seasons. Collected samples underwent analysis by sensitive nuclear analytical
techniques. The INAA and ICP MS results are derived from 238U mass fraction while high resolution
alpha-spectrometry gave results for each isotope expressed as specific activity concentration
(Bq kg-1). Based on the isotopic ratios 235U /238U and 234U /238U, depleted uranium content was
possible to distinguish from natural uranium in the samples. Results have shown that the sensitivity
of the examined morphologically different lichen types and their ability to accumulate metals
including uranium, strongly depend on metals’ concentration in the air as well as on the age of
lichens, properties of host species, chemical properties of particles, local climate conditions, exposure
time etc. Epiphytic lichen species Evernia prunastri was found to be the most suitable bioindicator
for the accumulation of uranium airborne particles. Concerning the uranium content, a significant
difference in concentrations had been observed for different sampling phases, with maximum
depleted uranium contribution during the clean-up activities. The variability in uranium
concentrations was noticeable in relation to prevailing wind direction, position and distance of the
sampling points. Having in mind the results obtained within the national radioactivity monitoring
program 2011-2017, it may be concluded that for detailed airborne uranium assessment, a
methodology such as biomonitoring with the application of sensitive nuclear techniques should be
considered.
PB  - Niš, Serbia : RAD Centre
C3  - RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : Book of abstracts
T1  - Airborne uranium assessment by epiphytic lichen species in contaminated areas
SP  - 419
EP  - 419
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12136
ER  - 

@conference{
author = "Radenković, Mirjana and Milošević, S. and Stanković, Srboljub and Joksić, J. and Onjia, Antonije",
year = "2019",
abstract = "Natural uranium, consisting of 238U, 234U and 235U isotopes is present in the environment in low
concentrations especially in the atmosphere where it usually exists as a constituent of particulate
matter submicron conglomerates suspended in the air. In the case of contamination, uranium may be
present in the aerosol, being transferred to other areas by wind and again settled on the surface soil
with possible migration into deeper layers or resuspension under certain meteorological conditions.
Here results on the airborne uranium assessment based on the analysis of lichen species already
present or transplanted into contaminated areas will be presented. With that aim, different in situ
and transplanted epiphytic lichen species have been taken at selected locations in southern Serbia in
the stage of existing contamination by depleted uranium, during the clean-up activities and
afterwards, in all four seasons. Collected samples underwent analysis by sensitive nuclear analytical
techniques. The INAA and ICP MS results are derived from 238U mass fraction while high resolution
alpha-spectrometry gave results for each isotope expressed as specific activity concentration
(Bq kg-1). Based on the isotopic ratios 235U /238U and 234U /238U, depleted uranium content was
possible to distinguish from natural uranium in the samples. Results have shown that the sensitivity
of the examined morphologically different lichen types and their ability to accumulate metals
including uranium, strongly depend on metals’ concentration in the air as well as on the age of
lichens, properties of host species, chemical properties of particles, local climate conditions, exposure
time etc. Epiphytic lichen species Evernia prunastri was found to be the most suitable bioindicator
for the accumulation of uranium airborne particles. Concerning the uranium content, a significant
difference in concentrations had been observed for different sampling phases, with maximum
depleted uranium contribution during the clean-up activities. The variability in uranium
concentrations was noticeable in relation to prevailing wind direction, position and distance of the
sampling points. Having in mind the results obtained within the national radioactivity monitoring
program 2011-2017, it may be concluded that for detailed airborne uranium assessment, a
methodology such as biomonitoring with the application of sensitive nuclear techniques should be
considered.",
publisher = "Niš, Serbia : RAD Centre",
journal = "RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : Book of abstracts",
title = "Airborne uranium assessment by epiphytic lichen species in contaminated areas",
pages = "419-419",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12136"
}

Radenković, M., Milošević, S., Stanković, S., Joksić, J.,& Onjia, A.. (2019). Airborne uranium assessment by epiphytic lichen species in contaminated areas. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : Book of abstracts
Niš, Serbia : RAD Centre., 419-419.
https://hdl.handle.net/21.15107/rcub_vinar_12136

Radenković M, Milošević S, Stanković S, Joksić J, Onjia A. Airborne uranium assessment by epiphytic lichen species in contaminated areas. in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : Book of abstracts. 2019;:419-419.
https://hdl.handle.net/21.15107/rcub_vinar_12136 .

Radenković, Mirjana, Milošević, S., Stanković, Srboljub, Joksić, J., Onjia, Antonije, "Airborne uranium assessment by epiphytic lichen species in contaminated areas" in RAD 2019 : 7th International Conference on Radiation in Various Fields of Research : Book of abstracts (2019):419-419,
https://hdl.handle.net/21.15107/rcub_vinar_12136 .

TY  - CONF
AU  - Milanović, Igor
AU  - Milošević, Sanja
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Novaković, Nikola
AU  - Paskaš Mamula, Bojana
AU  - Đukić, Anđela
AU  - Kuzmanović, Bojana
AU  - Kurko, Sandra
AU  - Checchetto, Riccardo
AU  - Grbović Novaković, Jasmina
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11302
PB  - Belgrade : University of Belgrade
C3  - Italian-Serbian Cooperation on Science, Technology and Humanites : program and book of abstracts
T1  - Nanostructured reactive hydrides for hydrogen storage
SP  - 81
EP  - 83
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11302
ER  - 

@conference{
author = "Milanović, Igor and Milošević, Sanja and Matović, Ljiljana and Vujasin, Radojka and Novaković, Nikola and Paskaš Mamula, Bojana and Đukić, Anđela and Kuzmanović, Bojana and Kurko, Sandra and Checchetto, Riccardo and Grbović Novaković, Jasmina",
year = "2015",
publisher = "Belgrade : University of Belgrade",
journal = "Italian-Serbian Cooperation on Science, Technology and Humanites : program and book of abstracts",
title = "Nanostructured reactive hydrides for hydrogen storage",
pages = "81-83",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11302"
}

Milanović, I., Milošević, S., Matović, L., Vujasin, R., Novaković, N., Paskaš Mamula, B., Đukić, A., Kuzmanović, B., Kurko, S., Checchetto, R.,& Grbović Novaković, J.. (2015). Nanostructured reactive hydrides for hydrogen storage. in Italian-Serbian Cooperation on Science, Technology and Humanites : program and book of abstracts
Belgrade : University of Belgrade., 81-83.
https://hdl.handle.net/21.15107/rcub_vinar_11302

Milanović I, Milošević S, Matović L, Vujasin R, Novaković N, Paskaš Mamula B, Đukić A, Kuzmanović B, Kurko S, Checchetto R, Grbović Novaković J. Nanostructured reactive hydrides for hydrogen storage. in Italian-Serbian Cooperation on Science, Technology and Humanites : program and book of abstracts. 2015;:81-83.
https://hdl.handle.net/21.15107/rcub_vinar_11302 .

Milanović, Igor, Milošević, Sanja, Matović, Ljiljana, Vujasin, Radojka, Novaković, Nikola, Paskaš Mamula, Bojana, Đukić, Anđela, Kuzmanović, Bojana, Kurko, Sandra, Checchetto, Riccardo, Grbović Novaković, Jasmina, "Nanostructured reactive hydrides for hydrogen storage" in Italian-Serbian Cooperation on Science, Technology and Humanites : program and book of abstracts (2015):81-83,
https://hdl.handle.net/21.15107/rcub_vinar_11302 .