TY  - CONF
AU  - Zorko, Benjamin
AU  - Ajtić, Jelena
AU  - Nečemer, Marijan
AU  - Sarvan, Darko
AU  - Rajačić, Milica
AU  - Korun, Matjaž
AU  - Vodenik, Branko
AU  - Krneta Nikolić, Jelena
AU  - Glavič-Cindro, Denis
AU  - Vukanac, Ivana
AU  - Petrovič, Toni
AU  - Ilić, Zorana
AU  - Vidic, alf
AU  - Didović, Irma
AU  - Janušeski, Jovan
AU  - Anuševa, Jordanka
AU  - Dimovska, Snezana
AU  - Danilovski, Dejan
AU  - Anđelić, Tomislav
AU  - Zekić, Ranko
AU  - Svrkota, Nikola
AU  - Radonjić, Slavko
AU  - Petrinec, Branko
PY  - 2023
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/3271
AB  - Mjerenja koncentracije aktivnosti radionuklida Be-7 (berilij-7), Pb-210 (olovo
210) i Cs-137 (cezij-137) u Zemljinoj atmosferi neophodna su za razumijevanje
atmosferskih procesa, kvalitete zraka i radioaktivnosti okoliša. Berilij-7 je
radioaktivni izotop koji prvenstveno nastaje interakcijom kozmičkih zraka s
atomima dušika i kisika u gornjoj atmosferi. Njegov kratki poluživot čini ga
vrijednim tragačem za atmosferske procese u relativno kratkim vremenskim
razdobljima. Olovo-210 je radioaktivni izotop čiji je primarni izvor u atmosferi
raspad plina radona. S dužim poluživotom od Be-7, pogodan je za proučavanje
dugotrajnijih atmosferskih procesa. Cezij-137 je, s druge strane, antropogeni
radioizotop s vremenom poluraspada čak i dužim od onog Pb-210, što ga
čini dobrim dugoročnim ekološkim tragačem. Nedavno je uspostavljena baza
podataka za praćenje radioaktivnosti tla u zraku (GRAMON). Sadrži rezultate mjerenja radioaktivnosti u površinskom zraku na sedam lokacija: Beograd (Srbija),
Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna
Gora), Skopje i Bitola (Sjeverna Makedonija). Naš rad daje statističku analizu
mjesečnih (prosječnih) vrijednosti koncentracija aktivnosti radionuklida za svaku
lokaciju od 2010. do 2019. Rezultati pokazuju prostorne razlike i vremensku
evoluciju radioaktivnosti zraka u ovoj regiji koja je obično nedovoljno zastupljena
u velikim studijama.
AB  - Measurements of activity concentrations of radionuclides Be-7 (beryllium-7), Pb210 (lead210), and Cs-137 (cesium-137) in the Earth’s atmosphere are essential for
understanding atmospheric processes, air quality, and environmental radioactivity.
Beryllium-7 is a radioactive isotope produced primarily by cosmic ray interactions
with nitrogen and oxygen atoms in the upper atmosphere. Its short half-life makes
it a valuable tracer for atmospheric processes on relatively short timescales. Lead210 is a radioactive isotope whose primary source in the atmosphere is decay
of radon gas. With a longer half-life than Be-7, it is suitable for studying longerterm atmospheric processes. Cesium-137, on the other hand, is an anthropogenic
radioisotope with a half-life even longer than that of Pb-210, which makes it a good
long-term environmental tracer.
The Ground Air Radioactivity Monitoring (GRAMON) database has been recently
established. It contains the outcomes of radioactivity measurements in the surface air at seven locations: Belgrade (Serbia), Ljubljana and Krško (Slovenia),
Sarajevo (Bosnia and Herzegovina), Podgorica (Montenegro), Skopje and Bitola
(North Macedonia). Our paper gives a statistical analysis of monthly (average)
values of the radionuclides’ activity concentrations for each location from 2010
to 2019. The results demonstrate spatial differences and temporal evolution of air
radioactivity over this region commonly underrepresented in large-scale studies.
PB  - Bilje : Javna ustanova „Park prirode Kopački rit“
C3  - 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.
T1  - Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi
T1  - Measurements of Be-7, Pb-210 and Cs-137 activity concentrations in the surface atmosphere
SP  - 250
EP  - 253
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_3271
ER  - 

@conference{
author = "Zorko, Benjamin and Ajtić, Jelena and Nečemer, Marijan and Sarvan, Darko and Rajačić, Milica and Korun, Matjaž and Vodenik, Branko and Krneta Nikolić, Jelena and Glavič-Cindro, Denis and Vukanac, Ivana and Petrovič, Toni and Ilić, Zorana and Vidic, alf and Didović, Irma and Janušeski, Jovan and Anuševa, Jordanka and Dimovska, Snezana and Danilovski, Dejan and Anđelić, Tomislav and Zekić, Ranko and Svrkota, Nikola and Radonjić, Slavko and Petrinec, Branko",
year = "2023",
abstract = "Mjerenja koncentracije aktivnosti radionuklida Be-7 (berilij-7), Pb-210 (olovo
210) i Cs-137 (cezij-137) u Zemljinoj atmosferi neophodna su za razumijevanje
atmosferskih procesa, kvalitete zraka i radioaktivnosti okoliša. Berilij-7 je
radioaktivni izotop koji prvenstveno nastaje interakcijom kozmičkih zraka s
atomima dušika i kisika u gornjoj atmosferi. Njegov kratki poluživot čini ga
vrijednim tragačem za atmosferske procese u relativno kratkim vremenskim
razdobljima. Olovo-210 je radioaktivni izotop čiji je primarni izvor u atmosferi
raspad plina radona. S dužim poluživotom od Be-7, pogodan je za proučavanje
dugotrajnijih atmosferskih procesa. Cezij-137 je, s druge strane, antropogeni
radioizotop s vremenom poluraspada čak i dužim od onog Pb-210, što ga
čini dobrim dugoročnim ekološkim tragačem. Nedavno je uspostavljena baza
podataka za praćenje radioaktivnosti tla u zraku (GRAMON). Sadrži rezultate mjerenja radioaktivnosti u površinskom zraku na sedam lokacija: Beograd (Srbija),
Ljubljana i Krško (Slovenija), Sarajevo (Bosna i Hercegovina), Podgorica (Crna
Gora), Skopje i Bitola (Sjeverna Makedonija). Naš rad daje statističku analizu
mjesečnih (prosječnih) vrijednosti koncentracija aktivnosti radionuklida za svaku
lokaciju od 2010. do 2019. Rezultati pokazuju prostorne razlike i vremensku
evoluciju radioaktivnosti zraka u ovoj regiji koja je obično nedovoljno zastupljena
u velikim studijama., Measurements of activity concentrations of radionuclides Be-7 (beryllium-7), Pb210 (lead210), and Cs-137 (cesium-137) in the Earth’s atmosphere are essential for
understanding atmospheric processes, air quality, and environmental radioactivity.
Beryllium-7 is a radioactive isotope produced primarily by cosmic ray interactions
with nitrogen and oxygen atoms in the upper atmosphere. Its short half-life makes
it a valuable tracer for atmospheric processes on relatively short timescales. Lead210 is a radioactive isotope whose primary source in the atmosphere is decay
of radon gas. With a longer half-life than Be-7, it is suitable for studying longerterm atmospheric processes. Cesium-137, on the other hand, is an anthropogenic
radioisotope with a half-life even longer than that of Pb-210, which makes it a good
long-term environmental tracer.
The Ground Air Radioactivity Monitoring (GRAMON) database has been recently
established. It contains the outcomes of radioactivity measurements in the surface air at seven locations: Belgrade (Serbia), Ljubljana and Krško (Slovenia),
Sarajevo (Bosnia and Herzegovina), Podgorica (Montenegro), Skopje and Bitola
(North Macedonia). Our paper gives a statistical analysis of monthly (average)
values of the radionuclides’ activity concentrations for each location from 2010
to 2019. The results demonstrate spatial differences and temporal evolution of air
radioactivity over this region commonly underrepresented in large-scale studies.",
publisher = "Bilje : Javna ustanova „Park prirode Kopački rit“",
journal = "12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.",
title = "Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi, Measurements of Be-7, Pb-210 and Cs-137 activity concentrations in the surface atmosphere",
pages = "250-253",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_3271"
}

Zorko, B., Ajtić, J., Nečemer, M., Sarvan, D., Rajačić, M., Korun, M., Vodenik, B., Krneta Nikolić, J., Glavič-Cindro, D., Vukanac, I., Petrovič, T., Ilić, Z., Vidic, a., Didović, I., Janušeski, J., Anuševa, J., Dimovska, S., Danilovski, D., Anđelić, T., Zekić, R., Svrkota, N., Radonjić, S.,& Petrinec, B.. (2023). Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi. in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.
Bilje : Javna ustanova „Park prirode Kopački rit“., 250-253.
https://hdl.handle.net/21.15107/rcub_veterinar_3271

Zorko B, Ajtić J, Nečemer M, Sarvan D, Rajačić M, Korun M, Vodenik B, Krneta Nikolić J, Glavič-Cindro D, Vukanac I, Petrovič T, Ilić Z, Vidic A, Didović I, Janušeski J, Anuševa J, Dimovska S, Danilovski D, Anđelić T, Zekić R, Svrkota N, Radonjić S, Petrinec B. Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi. in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023.. 2023;:250-253.
https://hdl.handle.net/21.15107/rcub_veterinar_3271 .

Zorko, Benjamin, Ajtić, Jelena, Nečemer, Marijan, Sarvan, Darko, Rajačić, Milica, Korun, Matjaž, Vodenik, Branko, Krneta Nikolić, Jelena, Glavič-Cindro, Denis, Vukanac, Ivana, Petrovič, Toni, Ilić, Zorana, Vidic, alf, Didović, Irma, Janušeski, Jovan, Anuševa, Jordanka, Dimovska, Snezana, Danilovski, Dejan, Anđelić, Tomislav, Zekić, Ranko, Svrkota, Nikola, Radonjić, Slavko, Petrinec, Branko, "Mjerenje koncentracija aktivnosti Be-7, Pb-210 i Cs-137 u površinskoj atmosferi" in 12. simpozija s međunarodnim sudjelovanjem KOPAČKI RIT / jučer, danas, sutra / 2023, Osijek, 28. – 29. rujna 2023. (2023):250-253,
https://hdl.handle.net/21.15107/rcub_veterinar_3271 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Sarvan, Darko
AU  - Nečemer, Marijan
AU  - Todorović, Dragana
AU  - Rajačić, Milica
AU  - Krneta Nikolić, Jelena
AU  - Djurdjević, Vladimir
AU  - Vodenik, Branko
AU  - Glavič Cindro, Denis
AU  - Kožar Logar, Jasmina
AU  - Zorko, Benjamin
PY  - 2019
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2342
AB  - Activity concentrations of cosmogenic beryllium-7, terragenic lead-210 and artificial caesium-137
are closely observed within environmental radioactivity monitoring programmes in Serbia and
Slovenia. In this study, we compare the temporal evolution and seasonal cycles of the radionuclides
recorded over 1991–2015 in three locations: Belgrade (44.88333 °N; 20.583333 °E; 95 m a.s.l.), the
capital of the Republic of Serbia; Krško (45.950414 °N; 15.512261 °E; 204 m a.s.l.), a town in eastern
Slovenia, located ~400 km west of Belgrade; and Ljubljana (46.042356 °N; 14.487494 °E;
292 m a.s.l.), the capital of the Republic of Slovenia, located ~500 km west of Belgrade. The latitudes
of these three sites differ only slightly, approximately by 1°.
The similarities between the data sets are evident from their measurement ranges and long-term
means. For example, the recorded beryllium-7 activity concentrations fall within the ranges reported
for different locations in Europe. In the lead-210 series, the observed values are similar to the activity
concentrations reported for some neighbouring regions, but around twofold higher than in locations
that are under a significant maritime influence, thus removed from this radionuclide’s source. The
activity concentrations of caesium-137 at all the sites are of the same order of magnitude and agree
with the post-Chernobyl picture of the fall-out in Europe.
However, there are some noticeable differences in the seasonal cycles of these radionuclides at
the investigated sites. For example, even though the beryllium-7 seasonal cycles in all the sites exhibit
a spring/summer maximum and a winter minimum, the timing of the maximum recorded at the
Slovenian sites is agreement with other Western European sites of similar latitude in contrast to the
Belgrade site that shows an earlier occurrence of the maximum, more in line with European locations
further north.
A possible explanation for the observed dissimilarities could lie in the differences of the
meteorological patterns in the investigated sites. According to Köppen-Geiger climate classification,
Krško and Ljubljana have Warm temperate fully humid climate with warm summers (Cfb), while
Belgrade is characterised by Warm temperate fully humid climate with hot summers (Cfa). Belgrade
is located deeper in the continental landmass, and its climate has more of midlatitude continental
characteristics, in terms of higher summer temperature, more pronounced seasonal temperature
amplitude, and lower precipitation, especially during summer months. These differences in climate
affect the transport and removal of the radionuclides from the atmosphere and could lead to the
observed dissimilarities. Still, a detailed analysis of the radionuclides’ time series and their relation to
the time series of the meteorological parameters is needed to better understand their interconnexion.
PB  - Niš : Sievert Association
C3  - Book of Abstracts of the International Conference on Radiation Applications, September 16–19, 2019, Beograd, Srbija
T1  - Comparison of the beryllium-7, lead-210 and caesium-137 activity concentrations in the surface air along 45 °N in Serbia and Slovenia
SP  - 27
EP  - 27
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2342
ER  - 

@conference{
author = "Ajtić, Jelena and Sarvan, Darko and Nečemer, Marijan and Todorović, Dragana and Rajačić, Milica and Krneta Nikolić, Jelena and Djurdjević, Vladimir and Vodenik, Branko and Glavič Cindro, Denis and Kožar Logar, Jasmina and Zorko, Benjamin",
year = "2019",
abstract = "Activity concentrations of cosmogenic beryllium-7, terragenic lead-210 and artificial caesium-137
are closely observed within environmental radioactivity monitoring programmes in Serbia and
Slovenia. In this study, we compare the temporal evolution and seasonal cycles of the radionuclides
recorded over 1991–2015 in three locations: Belgrade (44.88333 °N; 20.583333 °E; 95 m a.s.l.), the
capital of the Republic of Serbia; Krško (45.950414 °N; 15.512261 °E; 204 m a.s.l.), a town in eastern
Slovenia, located ~400 km west of Belgrade; and Ljubljana (46.042356 °N; 14.487494 °E;
292 m a.s.l.), the capital of the Republic of Slovenia, located ~500 km west of Belgrade. The latitudes
of these three sites differ only slightly, approximately by 1°.
The similarities between the data sets are evident from their measurement ranges and long-term
means. For example, the recorded beryllium-7 activity concentrations fall within the ranges reported
for different locations in Europe. In the lead-210 series, the observed values are similar to the activity
concentrations reported for some neighbouring regions, but around twofold higher than in locations
that are under a significant maritime influence, thus removed from this radionuclide’s source. The
activity concentrations of caesium-137 at all the sites are of the same order of magnitude and agree
with the post-Chernobyl picture of the fall-out in Europe.
However, there are some noticeable differences in the seasonal cycles of these radionuclides at
the investigated sites. For example, even though the beryllium-7 seasonal cycles in all the sites exhibit
a spring/summer maximum and a winter minimum, the timing of the maximum recorded at the
Slovenian sites is agreement with other Western European sites of similar latitude in contrast to the
Belgrade site that shows an earlier occurrence of the maximum, more in line with European locations
further north.
A possible explanation for the observed dissimilarities could lie in the differences of the
meteorological patterns in the investigated sites. According to Köppen-Geiger climate classification,
Krško and Ljubljana have Warm temperate fully humid climate with warm summers (Cfb), while
Belgrade is characterised by Warm temperate fully humid climate with hot summers (Cfa). Belgrade
is located deeper in the continental landmass, and its climate has more of midlatitude continental
characteristics, in terms of higher summer temperature, more pronounced seasonal temperature
amplitude, and lower precipitation, especially during summer months. These differences in climate
affect the transport and removal of the radionuclides from the atmosphere and could lead to the
observed dissimilarities. Still, a detailed analysis of the radionuclides’ time series and their relation to
the time series of the meteorological parameters is needed to better understand their interconnexion.",
publisher = "Niš : Sievert Association",
journal = "Book of Abstracts of the International Conference on Radiation Applications, September 16–19, 2019, Beograd, Srbija",
title = "Comparison of the beryllium-7, lead-210 and caesium-137 activity concentrations in the surface air along 45 °N in Serbia and Slovenia",
pages = "27-27",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2342"
}

Ajtić, J., Sarvan, D., Nečemer, M., Todorović, D., Rajačić, M., Krneta Nikolić, J., Djurdjević, V., Vodenik, B., Glavič Cindro, D., Kožar Logar, J.,& Zorko, B.. (2019). Comparison of the beryllium-7, lead-210 and caesium-137 activity concentrations in the surface air along 45 °N in Serbia and Slovenia. in Book of Abstracts of the International Conference on Radiation Applications, September 16–19, 2019, Beograd, Srbija
Niš : Sievert Association., 27-27.
https://hdl.handle.net/21.15107/rcub_veterinar_2342

Ajtić J, Sarvan D, Nečemer M, Todorović D, Rajačić M, Krneta Nikolić J, Djurdjević V, Vodenik B, Glavič Cindro D, Kožar Logar J, Zorko B. Comparison of the beryllium-7, lead-210 and caesium-137 activity concentrations in the surface air along 45 °N in Serbia and Slovenia. in Book of Abstracts of the International Conference on Radiation Applications, September 16–19, 2019, Beograd, Srbija. 2019;:27-27.
https://hdl.handle.net/21.15107/rcub_veterinar_2342 .

Ajtić, Jelena, Sarvan, Darko, Nečemer, Marijan, Todorović, Dragana, Rajačić, Milica, Krneta Nikolić, Jelena, Djurdjević, Vladimir, Vodenik, Branko, Glavič Cindro, Denis, Kožar Logar, Jasmina, Zorko, Benjamin, "Comparison of the beryllium-7, lead-210 and caesium-137 activity concentrations in the surface air along 45 °N in Serbia and Slovenia" in Book of Abstracts of the International Conference on Radiation Applications, September 16–19, 2019, Beograd, Srbija (2019):27-27,
https://hdl.handle.net/21.15107/rcub_veterinar_2342 .

TY  - CONF
AU  - Ajtić, Jelena
AU  - Djurdjević, Vladimir
AU  - Sarvan, Darko
AU  - Brattich, Erika
AU  - Hernández-Ceballos, Miguel Angel
AU  - Zorko, Benjamin
AU  - Todorović, Dragana
PY  - 2019
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2344
AB  - Since 2015, a scientific collaboration network between the University of Belgrade, the University
of Bologna and the Radioactive Monitoring Environmental (REM) group of the European
Commission Joint Research Centre – Ispra, has addressed the characterisation of the beryllium-7
concentration in the surface air recorded across Europe, and its link with meteorological conditions.
A set of studies carried out over this period has been based on the beryllium-7 activity measurements
collected and validated by the Radioactivity Monitoring Environmental Data Bank (REMdb)
(https://rem.jrc.ec.europa.eu/RemWeb/Index.aspx). REMdb makes accessible and understandable
to a wider audience radioactivity measurements made by all European Member States in the air,
water, milk, and mixed diet. Thus, the scientific community is given research opportunities to exploit
a unique collection of almost 5 million environmental radioactivity measurements taken across
Europe since 1988. Our collaboration has also investigated other sets of multidecadal beryllium-7
activity concentrations: 1) sampled in Serbia and measured at the Vinča Institute of Nuclear Sciences,
and 2) sampled in Slovenia and measured at the Jožef Stefan Institute.
This paper compiles our current understanding of the abundance of beryllium-7, which is a
naturally occurring radionuclide, in the surface air in Europe. Beryllium-7 is produced in the upper
troposphere-lower stratosphere (UT-LS) region, where it attaches to fine aerosols and is then
transported through the atmosphere. Due to its origin, it is considered a good tracer of air mass
history, and it can be used as an indicator of different processes in the atmosphere, such as vertical
exchange across the UT-LS region. Based on a number of our previous studies, we here give an
overall picture of the beryllium-7 activity concentration distribution in Europe. We describe its
general decrease from the south of the continent towards the polar region, different periodicities and
outliers identified in the time series, and we make an effort to identify the underlying driving
mechanisms that give rise to this distribution. We also look into temporal trends that show a
statistically significant increase in the beryllium-7 surface concentration. Since temperature is one of
the major factors that influence this radionuclide’s abundance in the air, we speculate that the trends
are affected by the global increase in temperature. For that reason, we intend to further inquire into
the possibility of using the beryllium-7 surface concentration as an indicator of climate change.
PB  - Niš : RAD Centre
C3  - Book of Abstracts of the Seventh International Conference on Radiation in Various Fields of Research, June 10–14, 2019, Herceg Novi, Montenegro
T1  - Temporal and spatial distribution of the beryllium-7 activity concentration in the surface air in Europe
SP  - 9
EP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2344
ER  - 

@conference{
author = "Ajtić, Jelena and Djurdjević, Vladimir and Sarvan, Darko and Brattich, Erika and Hernández-Ceballos, Miguel Angel and Zorko, Benjamin and Todorović, Dragana",
year = "2019",
abstract = "Since 2015, a scientific collaboration network between the University of Belgrade, the University
of Bologna and the Radioactive Monitoring Environmental (REM) group of the European
Commission Joint Research Centre – Ispra, has addressed the characterisation of the beryllium-7
concentration in the surface air recorded across Europe, and its link with meteorological conditions.
A set of studies carried out over this period has been based on the beryllium-7 activity measurements
collected and validated by the Radioactivity Monitoring Environmental Data Bank (REMdb)
(https://rem.jrc.ec.europa.eu/RemWeb/Index.aspx). REMdb makes accessible and understandable
to a wider audience radioactivity measurements made by all European Member States in the air,
water, milk, and mixed diet. Thus, the scientific community is given research opportunities to exploit
a unique collection of almost 5 million environmental radioactivity measurements taken across
Europe since 1988. Our collaboration has also investigated other sets of multidecadal beryllium-7
activity concentrations: 1) sampled in Serbia and measured at the Vinča Institute of Nuclear Sciences,
and 2) sampled in Slovenia and measured at the Jožef Stefan Institute.
This paper compiles our current understanding of the abundance of beryllium-7, which is a
naturally occurring radionuclide, in the surface air in Europe. Beryllium-7 is produced in the upper
troposphere-lower stratosphere (UT-LS) region, where it attaches to fine aerosols and is then
transported through the atmosphere. Due to its origin, it is considered a good tracer of air mass
history, and it can be used as an indicator of different processes in the atmosphere, such as vertical
exchange across the UT-LS region. Based on a number of our previous studies, we here give an
overall picture of the beryllium-7 activity concentration distribution in Europe. We describe its
general decrease from the south of the continent towards the polar region, different periodicities and
outliers identified in the time series, and we make an effort to identify the underlying driving
mechanisms that give rise to this distribution. We also look into temporal trends that show a
statistically significant increase in the beryllium-7 surface concentration. Since temperature is one of
the major factors that influence this radionuclide’s abundance in the air, we speculate that the trends
are affected by the global increase in temperature. For that reason, we intend to further inquire into
the possibility of using the beryllium-7 surface concentration as an indicator of climate change.",
publisher = "Niš : RAD Centre",
journal = "Book of Abstracts of the Seventh International Conference on Radiation in Various Fields of Research, June 10–14, 2019, Herceg Novi, Montenegro",
title = "Temporal and spatial distribution of the beryllium-7 activity concentration in the surface air in Europe",
pages = "9-9",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2344"
}

Ajtić, J., Djurdjević, V., Sarvan, D., Brattich, E., Hernández-Ceballos, M. A., Zorko, B.,& Todorović, D.. (2019). Temporal and spatial distribution of the beryllium-7 activity concentration in the surface air in Europe. in Book of Abstracts of the Seventh International Conference on Radiation in Various Fields of Research, June 10–14, 2019, Herceg Novi, Montenegro
Niš : RAD Centre., 9-9.
https://hdl.handle.net/21.15107/rcub_veterinar_2344

Ajtić J, Djurdjević V, Sarvan D, Brattich E, Hernández-Ceballos MA, Zorko B, Todorović D. Temporal and spatial distribution of the beryllium-7 activity concentration in the surface air in Europe. in Book of Abstracts of the Seventh International Conference on Radiation in Various Fields of Research, June 10–14, 2019, Herceg Novi, Montenegro. 2019;:9-9.
https://hdl.handle.net/21.15107/rcub_veterinar_2344 .

Ajtić, Jelena, Djurdjević, Vladimir, Sarvan, Darko, Brattich, Erika, Hernández-Ceballos, Miguel Angel, Zorko, Benjamin, Todorović, Dragana, "Temporal and spatial distribution of the beryllium-7 activity concentration in the surface air in Europe" in Book of Abstracts of the Seventh International Conference on Radiation in Various Fields of Research, June 10–14, 2019, Herceg Novi, Montenegro (2019):9-9,
https://hdl.handle.net/21.15107/rcub_veterinar_2344 .

TY  - CONF
AU  - Zorko, Benjamin
AU  - Ajtić, Jelena
AU  - Vodenik, Branko
AU  - Glavič Cindro, Denis
AU  - Rajačić, Milica
AU  - Petrovič, Toni
AU  - Krneta-Nikolić, Jelena D.
AU  - Janković, Marija M.
AU  - Sarap, Nataša
AU  - Vukanac, Ivana
AU  - Pantelić, Gordana K.
AU  - Todorović, Dragana
PY  - 2018
UR  - https://vet-erinar.vet.bg.ac.rs/handle/123456789/2345
AB  - The isotopes of ruthenium (Ru-106, Ru-103) were detected by several European environmental networks involved in the monitoring of atmospheric radioactive contamination in late September 2017. The radioactive cloud passed over the countries in the east and south-east of Europe, while other countries in Europe were just brushed up with very low activity concentrations of Ru-106. Ruthenium is very rare and hence its presence may suggest that an event of some nature occurred. Ruthenium-106 is a fission product from the nuclear industry and it is also used in medical procedures, such as brachytherapy treatments. Ruthenium-106 is a beta emitter with a half-life of 1.02 year so the isotopic presence may persist for some time, with its duration depending on many factors. Apart from the disintegration of Ru-106 to the ground state of a short-lived Rh-106, some characteristic gamma rays are emitted. The origin of Ru-106 in the atmosphere is still unclear. Among the countries that were affected by the passage of the radioactive cloud containing isotopes of ruthenium were the Republic of Slovenia and Republic of Serbia. The activity concentrations of Ru106 in the air detected in several stations of both countries were of a similar magnitude. The activity concentrations were determined by standard gamma spectrometry measurements at the Vinča Institute of Nuclear Sciences and Jožef Stefan Institute for the Serbian and Slovenian sampling sites, respectively. Ruthenium was also detected in trace levels in other environmental media (precipitation). Several statistical calculations to compare measurement results in Slovenia and Serbia are carried out. Those calculations also take into account other radionuclides, such as cosmogenic beryllium-7 and a long-lived radon progeny lead-210, to investigate possible atmospheric processes accompanying the release of ruthenium.
PB  - Niš : RAD Association
C3  - 6th International Conference on Radiation and Applications in Various Fields of Research (RAD), Book of Abstracts, Jun 18-22, 2018, Ohrid, Macedonia
T1  - Comparison of concentration activities of ruthenium isotopes measured over Slovenia and Serbia
SP  - 193
EP  - 193
UR  - https://hdl.handle.net/21.15107/rcub_veterinar_2345
ER  - 

@conference{
author = "Zorko, Benjamin and Ajtić, Jelena and Vodenik, Branko and Glavič Cindro, Denis and Rajačić, Milica and Petrovič, Toni and Krneta-Nikolić, Jelena D. and Janković, Marija M. and Sarap, Nataša and Vukanac, Ivana and Pantelić, Gordana K. and Todorović, Dragana",
year = "2018",
abstract = "The isotopes of ruthenium (Ru-106, Ru-103) were detected by several European environmental networks involved in the monitoring of atmospheric radioactive contamination in late September 2017. The radioactive cloud passed over the countries in the east and south-east of Europe, while other countries in Europe were just brushed up with very low activity concentrations of Ru-106. Ruthenium is very rare and hence its presence may suggest that an event of some nature occurred. Ruthenium-106 is a fission product from the nuclear industry and it is also used in medical procedures, such as brachytherapy treatments. Ruthenium-106 is a beta emitter with a half-life of 1.02 year so the isotopic presence may persist for some time, with its duration depending on many factors. Apart from the disintegration of Ru-106 to the ground state of a short-lived Rh-106, some characteristic gamma rays are emitted. The origin of Ru-106 in the atmosphere is still unclear. Among the countries that were affected by the passage of the radioactive cloud containing isotopes of ruthenium were the Republic of Slovenia and Republic of Serbia. The activity concentrations of Ru106 in the air detected in several stations of both countries were of a similar magnitude. The activity concentrations were determined by standard gamma spectrometry measurements at the Vinča Institute of Nuclear Sciences and Jožef Stefan Institute for the Serbian and Slovenian sampling sites, respectively. Ruthenium was also detected in trace levels in other environmental media (precipitation). Several statistical calculations to compare measurement results in Slovenia and Serbia are carried out. Those calculations also take into account other radionuclides, such as cosmogenic beryllium-7 and a long-lived radon progeny lead-210, to investigate possible atmospheric processes accompanying the release of ruthenium.",
publisher = "Niš : RAD Association",
journal = "6th International Conference on Radiation and Applications in Various Fields of Research (RAD), Book of Abstracts, Jun 18-22, 2018, Ohrid, Macedonia",
title = "Comparison of concentration activities of ruthenium isotopes measured over Slovenia and Serbia",
pages = "193-193",
url = "https://hdl.handle.net/21.15107/rcub_veterinar_2345"
}

Zorko, B., Ajtić, J., Vodenik, B., Glavič Cindro, D., Rajačić, M., Petrovič, T., Krneta-Nikolić, J. D., Janković, M. M., Sarap, N., Vukanac, I., Pantelić, G. K.,& Todorović, D.. (2018). Comparison of concentration activities of ruthenium isotopes measured over Slovenia and Serbia. in 6th International Conference on Radiation and Applications in Various Fields of Research (RAD), Book of Abstracts, Jun 18-22, 2018, Ohrid, Macedonia
Niš : RAD Association., 193-193.
https://hdl.handle.net/21.15107/rcub_veterinar_2345

Zorko B, Ajtić J, Vodenik B, Glavič Cindro D, Rajačić M, Petrovič T, Krneta-Nikolić JD, Janković MM, Sarap N, Vukanac I, Pantelić GK, Todorović D. Comparison of concentration activities of ruthenium isotopes measured over Slovenia and Serbia. in 6th International Conference on Radiation and Applications in Various Fields of Research (RAD), Book of Abstracts, Jun 18-22, 2018, Ohrid, Macedonia. 2018;:193-193.
https://hdl.handle.net/21.15107/rcub_veterinar_2345 .

Zorko, Benjamin, Ajtić, Jelena, Vodenik, Branko, Glavič Cindro, Denis, Rajačić, Milica, Petrovič, Toni, Krneta-Nikolić, Jelena D., Janković, Marija M., Sarap, Nataša, Vukanac, Ivana, Pantelić, Gordana K., Todorović, Dragana, "Comparison of concentration activities of ruthenium isotopes measured over Slovenia and Serbia" in 6th International Conference on Radiation and Applications in Various Fields of Research (RAD), Book of Abstracts, Jun 18-22, 2018, Ohrid, Macedonia (2018):193-193,
https://hdl.handle.net/21.15107/rcub_veterinar_2345 .