Bikit, Kristina

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Authority KeyName Variants
cc4c7d2c-9354-43df-9555-7407209d563b
  • Bikit, Kristina (5)
  • Bikit-Schroeder, Kristina (1)
  • Bikit-Šreder, Kristina (1)
Projects

Author's Bibliography

Proposal and optimization of method for direct determination of the thoron progeny concentrations and thoron equilibrium

Forkapić, Sofija; Lakatoš, Robert; Čeliković, Igor T.; Bikit-Schroeder, Kristina; Mrđa, Dušan; Radolić, Vanja; Samardžić, Selena

(2019)

TY  - JOUR
AU  - Forkapić, Sofija
AU  - Lakatoš, Robert
AU  - Čeliković, Igor T.
AU  - Bikit-Schroeder, Kristina
AU  - Mrđa, Dušan
AU  - Radolić, Vanja
AU  - Samardžić, Selena
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0969806X18315032
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8092
AB  - Most studies focused on thoron have shown that indoor thoron originates mainly from building materials and that thoron concentrations exponentially decrease with a distance from a wall surface. On the contrary, due to longer half-lives of thoron progenies, 212 Pb and 212 Bi, which are mainly responsible for the bronchial dose, it is expected that their spatial distribution is homogeneous. Therefore, direct measurements of thoron progeny concentrations or direct thoron measurement and determination of thoron equilibrium factor are necessary for accurate dose assessment. In this paper, we have optimized and validated a reliable and inexpensive method for direct measurement of thoron progenies concentrations based on an air filtration followed by gamma spectrometry measurements. With simultaneous measurements of indoor thoron by the RAD7 active device, the equilibrium factor for thoron in 15 different investigated dwellings was estimated. Obtained results for the equilibrium equivalent thoron concentrations in the range from 0.277 Bq/m 3 to 11.34 Bq/m 3 and thoron equilibrium factor in the range from 0.0047 to 0.098 with arithmetic mean value of 0.034 are in good agreement with already published results. © 2019 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Proposal and optimization of method for direct determination of the thoron progeny concentrations and thoron equilibrium
VL  - 159
SP  - 57
EP  - 63
DO  - 10.1016/j.radphyschem.2019.02.043
ER  - 
@article{
author = "Forkapić, Sofija and Lakatoš, Robert and Čeliković, Igor T. and Bikit-Schroeder, Kristina and Mrđa, Dušan and Radolić, Vanja and Samardžić, Selena",
year = "2019",
abstract = "Most studies focused on thoron have shown that indoor thoron originates mainly from building materials and that thoron concentrations exponentially decrease with a distance from a wall surface. On the contrary, due to longer half-lives of thoron progenies, 212 Pb and 212 Bi, which are mainly responsible for the bronchial dose, it is expected that their spatial distribution is homogeneous. Therefore, direct measurements of thoron progeny concentrations or direct thoron measurement and determination of thoron equilibrium factor are necessary for accurate dose assessment. In this paper, we have optimized and validated a reliable and inexpensive method for direct measurement of thoron progenies concentrations based on an air filtration followed by gamma spectrometry measurements. With simultaneous measurements of indoor thoron by the RAD7 active device, the equilibrium factor for thoron in 15 different investigated dwellings was estimated. Obtained results for the equilibrium equivalent thoron concentrations in the range from 0.277 Bq/m 3 to 11.34 Bq/m 3 and thoron equilibrium factor in the range from 0.0047 to 0.098 with arithmetic mean value of 0.034 are in good agreement with already published results. © 2019 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Proposal and optimization of method for direct determination of the thoron progeny concentrations and thoron equilibrium",
volume = "159",
pages = "57-63",
doi = "10.1016/j.radphyschem.2019.02.043"
}
Forkapić, S., Lakatoš, R., Čeliković, I. T., Bikit-Schroeder, K., Mrđa, D., Radolić, V.,& Samardžić, S.. (2019). Proposal and optimization of method for direct determination of the thoron progeny concentrations and thoron equilibrium. in Radiation Physics and Chemistry, 159, 57-63.
https://doi.org/10.1016/j.radphyschem.2019.02.043
Forkapić S, Lakatoš R, Čeliković IT, Bikit-Schroeder K, Mrđa D, Radolić V, Samardžić S. Proposal and optimization of method for direct determination of the thoron progeny concentrations and thoron equilibrium. in Radiation Physics and Chemistry. 2019;159:57-63.
doi:10.1016/j.radphyschem.2019.02.043 .
Forkapić, Sofija, Lakatoš, Robert, Čeliković, Igor T., Bikit-Schroeder, Kristina, Mrđa, Dušan, Radolić, Vanja, Samardžić, Selena, "Proposal and optimization of method for direct determination of the thoron progeny concentrations and thoron equilibrium" in Radiation Physics and Chemistry, 159 (2019):57-63,
https://doi.org/10.1016/j.radphyschem.2019.02.043 . .
2
3
3

Problem torona i predlog direktne metode određivanja koncentracije toronovih potomaka

Forkapić, Sofija; Lakatoš, Robert; Čeliković, Igor T.; Bikit-Šreder, Kristina; Mrđa, Dušan; Samardžić, Selena

(Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе, 2019)

TY  - CONF
AU  - Forkapić, Sofija
AU  - Lakatoš, Robert
AU  - Čeliković, Igor T.
AU  - Bikit-Šreder, Kristina
AU  - Mrđa, Dušan
AU  - Samardžić, Selena
PY  - 2019
UR  - https://plus.sr.cobiss.net/opac7/bib/279687436
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8700
AB  - Nedavne  studije  koje  se  bave  problemom  torona  pokazuju  da  toron  u  vazduhu zatvorenih prostorija dominantno potiče od upotrebljenih građevinskih materijala za izradu i pokrivanje zidova i podova i da koncentracija torona eksponencijalno opada sa rastojanjem od površine zidova. Međutim, usled dužeg perioda poluraspada, toronovi potomci 212Pb i 212Bi imaju homogenu prostornu distribuciju i mogu značajno doprineti bronhijalnoj dozi. U ovom radu je razvijena metoda direktnog određivanja koncentracije toronovih potomaka u vazduhu koja se zasniva na gama-spektrometrijskim merenjima filter papira uz detaljnu analizu i optimizaciju vremena usisavanja, hlađenja i merenja na HPGe detektorskim sistemima. Metoda je validovana kroz uporedna merenja sa aktivnim monitorom koji se najčešće koristi za merenje ravnotežne ekvivalentne koncentracije torona. Ovakav način ispitivanja toronske ravnoteže će doprineti preciznom određivanju doze koju primi stanovništvo od inhalacije torona i potomaka, naročito zbog poznate problematike mogućnosti merenja torona kao kratkoživećeg radionuklida. Rezultati preliminarnog istraživanja problema torona u petnaest odabranih kuća pokazuju da su procenjene doze od udisanja torona uporedive sa dozama koje stanovništvo primi od udisanja radona i da toron mora biti obuhvaćen u budućim monitorinzima radona.
AB  - Recentstudies focused on thoron have shown that indoor thoron originates mainly from building materials and that thoron concentrations exponentially decrease with a distance from a wall surface. However, due to longer half-lives of thoron progenies, 212Pb and 212Bi, which are mainly responsible for the bronchial dose, it is expected that their spatial distribution is homogeneous. In this paper, we have developed and optimized a method for direct measurement of thoron progenies concentrations based on an air filtration followed by gamma spectrometry measurements. The method is validated through comparative measurements with an active monitor, which is most often used to measure the equilibrium equivalentthoron concentration. The results of the preliminary study of the thoron problem in fifteen selected homes show that the estimated doses frominhalation of thoron progeniesare comparable with the doses that the population receives from radon inhalation and that the thoron must be included in future radon monitoring.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 30. симпозијум ДЗЗСЦГ : зборник радова
T1  - Problem torona i predlog direktne metode određivanja koncentracije toronovih potomaka
T1  - Thoron problem and proposal of method for direct determination of the thoron progeny concentrations
SP  - 208
EP  - 214
ER  - 
@conference{
author = "Forkapić, Sofija and Lakatoš, Robert and Čeliković, Igor T. and Bikit-Šreder, Kristina and Mrđa, Dušan and Samardžić, Selena",
year = "2019",
abstract = "Nedavne  studije  koje  se  bave  problemom  torona  pokazuju  da  toron  u  vazduhu zatvorenih prostorija dominantno potiče od upotrebljenih građevinskih materijala za izradu i pokrivanje zidova i podova i da koncentracija torona eksponencijalno opada sa rastojanjem od površine zidova. Međutim, usled dužeg perioda poluraspada, toronovi potomci 212Pb i 212Bi imaju homogenu prostornu distribuciju i mogu značajno doprineti bronhijalnoj dozi. U ovom radu je razvijena metoda direktnog određivanja koncentracije toronovih potomaka u vazduhu koja se zasniva na gama-spektrometrijskim merenjima filter papira uz detaljnu analizu i optimizaciju vremena usisavanja, hlađenja i merenja na HPGe detektorskim sistemima. Metoda je validovana kroz uporedna merenja sa aktivnim monitorom koji se najčešće koristi za merenje ravnotežne ekvivalentne koncentracije torona. Ovakav način ispitivanja toronske ravnoteže će doprineti preciznom određivanju doze koju primi stanovništvo od inhalacije torona i potomaka, naročito zbog poznate problematike mogućnosti merenja torona kao kratkoživećeg radionuklida. Rezultati preliminarnog istraživanja problema torona u petnaest odabranih kuća pokazuju da su procenjene doze od udisanja torona uporedive sa dozama koje stanovništvo primi od udisanja radona i da toron mora biti obuhvaćen u budućim monitorinzima radona., Recentstudies focused on thoron have shown that indoor thoron originates mainly from building materials and that thoron concentrations exponentially decrease with a distance from a wall surface. However, due to longer half-lives of thoron progenies, 212Pb and 212Bi, which are mainly responsible for the bronchial dose, it is expected that their spatial distribution is homogeneous. In this paper, we have developed and optimized a method for direct measurement of thoron progenies concentrations based on an air filtration followed by gamma spectrometry measurements. The method is validated through comparative measurements with an active monitor, which is most often used to measure the equilibrium equivalentthoron concentration. The results of the preliminary study of the thoron problem in fifteen selected homes show that the estimated doses frominhalation of thoron progeniesare comparable with the doses that the population receives from radon inhalation and that the thoron must be included in future radon monitoring.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "30. симпозијум ДЗЗСЦГ : зборник радова",
title = "Problem torona i predlog direktne metode određivanja koncentracije toronovih potomaka, Thoron problem and proposal of method for direct determination of the thoron progeny concentrations",
pages = "208-214"
}
Forkapić, S., Lakatoš, R., Čeliković, I. T., Bikit-Šreder, K., Mrđa, D.,& Samardžić, S.. (2019). Problem torona i predlog direktne metode određivanja koncentracije toronovih potomaka. in 30. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 208-214.
Forkapić S, Lakatoš R, Čeliković IT, Bikit-Šreder K, Mrđa D, Samardžić S. Problem torona i predlog direktne metode određivanja koncentracije toronovih potomaka. in 30. симпозијум ДЗЗСЦГ : зборник радова. 2019;:208-214..
Forkapić, Sofija, Lakatoš, Robert, Čeliković, Igor T., Bikit-Šreder, Kristina, Mrđa, Dušan, Samardžić, Selena, "Problem torona i predlog direktne metode određivanja koncentracije toronovih potomaka" in 30. симпозијум ДЗЗСЦГ : зборник радова (2019):208-214.

Assessment of Radiological Significance of Building Materials and Residues

Todorović, Nataša; Bikit, Ištvan S.; Krmar, Miodrag; Mrda, Dusan; Hansman, Jan; Nikolov, Jovana; Todorović, Slavko; Forkapic, Sofija; Jovancevic, Nikola; Bikit, Kristina; Janković-Mandić, Ljiljana

(2017)

TY  - JOUR
AU  - Todorović, Nataša
AU  - Bikit, Ištvan S.
AU  - Krmar, Miodrag
AU  - Mrda, Dusan
AU  - Hansman, Jan
AU  - Nikolov, Jovana
AU  - Todorović, Slavko
AU  - Forkapic, Sofija
AU  - Jovancevic, Nikola
AU  - Bikit, Kristina
AU  - Janković-Mandić, Ljiljana
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1916
AB  - The estimation of the radioactivity levels of materials utilized in construction sectors is crucial in the assessment of possible radiological hazards to human health. In the paper, the results of gamma spectroscopy study of 211 zircon, 425 sand, 781 lime, 348 perlite, 2692 cement, 232 calplex, 968 gypsum, 2741 granite and 21 coal fly ash samples gathered from different countries and imported in Serbia in period 2006-2016 were presented. In order to assess the radiological impact from the investigated samples, the activity concentration index I-RP112 for all samples was ascertained. This research yields insight into the radioactive content in a variety of building materials of different origin. The obtained results were discussed on the basis of relevant national and international legislation and guidance and compared with the corresponding results in the literature.
T2  - Romanian Journal of Physics
T1  - Assessment of Radiological Significance of Building Materials and Residues
VL  - 62
IS  - 9-10
SP  - 817
ER  - 
@article{
author = "Todorović, Nataša and Bikit, Ištvan S. and Krmar, Miodrag and Mrda, Dusan and Hansman, Jan and Nikolov, Jovana and Todorović, Slavko and Forkapic, Sofija and Jovancevic, Nikola and Bikit, Kristina and Janković-Mandić, Ljiljana",
year = "2017",
abstract = "The estimation of the radioactivity levels of materials utilized in construction sectors is crucial in the assessment of possible radiological hazards to human health. In the paper, the results of gamma spectroscopy study of 211 zircon, 425 sand, 781 lime, 348 perlite, 2692 cement, 232 calplex, 968 gypsum, 2741 granite and 21 coal fly ash samples gathered from different countries and imported in Serbia in period 2006-2016 were presented. In order to assess the radiological impact from the investigated samples, the activity concentration index I-RP112 for all samples was ascertained. This research yields insight into the radioactive content in a variety of building materials of different origin. The obtained results were discussed on the basis of relevant national and international legislation and guidance and compared with the corresponding results in the literature.",
journal = "Romanian Journal of Physics",
title = "Assessment of Radiological Significance of Building Materials and Residues",
volume = "62",
number = "9-10",
pages = "817"
}
Todorović, N., Bikit, I. S., Krmar, M., Mrda, D., Hansman, J., Nikolov, J., Todorović, S., Forkapic, S., Jovancevic, N., Bikit, K.,& Janković-Mandić, L.. (2017). Assessment of Radiological Significance of Building Materials and Residues. in Romanian Journal of Physics, 62(9-10), 817.
Todorović N, Bikit IS, Krmar M, Mrda D, Hansman J, Nikolov J, Todorović S, Forkapic S, Jovancevic N, Bikit K, Janković-Mandić L. Assessment of Radiological Significance of Building Materials and Residues. in Romanian Journal of Physics. 2017;62(9-10):817..
Todorović, Nataša, Bikit, Ištvan S., Krmar, Miodrag, Mrda, Dusan, Hansman, Jan, Nikolov, Jovana, Todorović, Slavko, Forkapic, Sofija, Jovancevic, Nikola, Bikit, Kristina, Janković-Mandić, Ljiljana, "Assessment of Radiological Significance of Building Materials and Residues" in Romanian Journal of Physics, 62, no. 9-10 (2017):817.
3

Korišćenje multivarijantne analize za predviđanje geogenog radonskog potencijala

Forkapić, Sofija; Maletić, Dimitrije; Vasin, Jovica; Bikit, Kristina; Mrđa, Dušan; Bikit, Ištvan S.; Udovičić, Vladimir; Banjanac, Radomir

(Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе, 2017)

TY  - CONF
AU  - Forkapić, Sofija
AU  - Maletić, Dimitrije
AU  - Vasin, Jovica
AU  - Bikit, Kristina
AU  - Mrđa, Dušan
AU  - Bikit, Ištvan S.
AU  - Udovičić, Vladimir
AU  - Banjanac, Radomir
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8276
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Geogeni radonski potencijal koji izdvaja radon u podzemnim slojevima kao dominantan
uzrok akumulacije radona u zatvorenim prostorijama i koji je nezavisan od ljudskog
uticaja i vremenski konstantan u geološkim okvirima predstavlja glavni alat za
iznalaženje radonom ugroženih područja. U nedostatku podataka za permeabilnost
zemljišta za radon i malog broja merenja radona u zemljištu, upotrebljena je
multivarijantna analiza velikog broja raspoloživih geohemijskih podataka, merenja
radioaktivnosti zemljišta i koncentracija aktivnosti radona u zatvorenim prostorijama
datih lokacija na području Vojvodine. Nekoliko uporedivih metoda iz ROOT okvira za
analize softverskog paketa TMVA je korišćeno za analizu zavisnosti koncentracije
radona u zatvorenom od mnoštva ulaznih varijabli. BDTG kao najpodobnija metoda je
pokazala da su varijable sa najvećim uticajem na koncentraciju radona u zatvorenim
prostorijama pored sadržaja ukupnog azota, koncentracije aktivnosti radionuklida u
zemljištu na profilu dubine od 30 cm i sadržaj humusa i gline. Dobijeni rezultati
pokazuju dobro slaganje sa nedavnim ispitivanjem emanacije radona iz zemljišta na
području grada Novog Sada.
AB  - The most dominant source of indoor radon is the underlying soil, so the enhanced levels
of radon are usually expected in mountain regions and geology units with high radium
and uranium content in surface soils. Laboratory for radioactivity and dose
measurement, Faculty of Sciences, University of Novi Sad has rich databases of natural
radionuclides concentrations in Vojvodina soil and also of indoor radon concentrations
for the region of Vojvodina, Northern Province of Serbia. In this paper, we present the
results of correlative and multivariate analysis of these results and geochemical
characteristics of soil in order to estimate the geogenic radon potential. The correlative
and multivariate analysis were done using Toolkit for Multivariate Analysis software
package TMVA package, which uses several comparable multivariate methods for our
analysis. The evaluation ranking results based on the best signal efficiency and purity,
show that the Boosted Decision Trees (BDT) and Multi Layer Preceptor (MLP), based
on Artificial Neural Network (ANN), are multivariate methods which give the best
results in the analysis. The BDTG multivariate method shows that variables with the
highest importance are radio-nuclides activity on 30 cm depth. Moreover, the
multivariate regression methods give a good approximation of radon activity using full
set of input variables
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Korišćenje multivarijantne analize za predviđanje geogenog radonskog potencijala
T1  - Multivariate analysis application for geogeny radon potential prediction
SP  - 210
EP  - 218
ER  - 
@conference{
author = "Forkapić, Sofija and Maletić, Dimitrije and Vasin, Jovica and Bikit, Kristina and Mrđa, Dušan and Bikit, Ištvan S. and Udovičić, Vladimir and Banjanac, Radomir",
year = "2017",
abstract = "Geogeni radonski potencijal koji izdvaja radon u podzemnim slojevima kao dominantan
uzrok akumulacije radona u zatvorenim prostorijama i koji je nezavisan od ljudskog
uticaja i vremenski konstantan u geološkim okvirima predstavlja glavni alat za
iznalaženje radonom ugroženih područja. U nedostatku podataka za permeabilnost
zemljišta za radon i malog broja merenja radona u zemljištu, upotrebljena je
multivarijantna analiza velikog broja raspoloživih geohemijskih podataka, merenja
radioaktivnosti zemljišta i koncentracija aktivnosti radona u zatvorenim prostorijama
datih lokacija na području Vojvodine. Nekoliko uporedivih metoda iz ROOT okvira za
analize softverskog paketa TMVA je korišćeno za analizu zavisnosti koncentracije
radona u zatvorenom od mnoštva ulaznih varijabli. BDTG kao najpodobnija metoda je
pokazala da su varijable sa najvećim uticajem na koncentraciju radona u zatvorenim
prostorijama pored sadržaja ukupnog azota, koncentracije aktivnosti radionuklida u
zemljištu na profilu dubine od 30 cm i sadržaj humusa i gline. Dobijeni rezultati
pokazuju dobro slaganje sa nedavnim ispitivanjem emanacije radona iz zemljišta na
području grada Novog Sada., The most dominant source of indoor radon is the underlying soil, so the enhanced levels
of radon are usually expected in mountain regions and geology units with high radium
and uranium content in surface soils. Laboratory for radioactivity and dose
measurement, Faculty of Sciences, University of Novi Sad has rich databases of natural
radionuclides concentrations in Vojvodina soil and also of indoor radon concentrations
for the region of Vojvodina, Northern Province of Serbia. In this paper, we present the
results of correlative and multivariate analysis of these results and geochemical
characteristics of soil in order to estimate the geogenic radon potential. The correlative
and multivariate analysis were done using Toolkit for Multivariate Analysis software
package TMVA package, which uses several comparable multivariate methods for our
analysis. The evaluation ranking results based on the best signal efficiency and purity,
show that the Boosted Decision Trees (BDT) and Multi Layer Preceptor (MLP), based
on Artificial Neural Network (ANN), are multivariate methods which give the best
results in the analysis. The BDTG multivariate method shows that variables with the
highest importance are radio-nuclides activity on 30 cm depth. Moreover, the
multivariate regression methods give a good approximation of radon activity using full
set of input variables",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Korišćenje multivarijantne analize za predviđanje geogenog radonskog potencijala, Multivariate analysis application for geogeny radon potential prediction",
pages = "210-218"
}
Forkapić, S., Maletić, D., Vasin, J., Bikit, K., Mrđa, D., Bikit, I. S., Udovičić, V.,& Banjanac, R.. (2017). Korišćenje multivarijantne analize za predviđanje geogenog radonskog potencijala. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 210-218.
Forkapić S, Maletić D, Vasin J, Bikit K, Mrđa D, Bikit IS, Udovičić V, Banjanac R. Korišćenje multivarijantne analize za predviđanje geogenog radonskog potencijala. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:210-218..
Forkapić, Sofija, Maletić, Dimitrije, Vasin, Jovica, Bikit, Kristina, Mrđa, Dušan, Bikit, Ištvan S., Udovičić, Vladimir, Banjanac, Radomir, "Korišćenje multivarijantne analize za predviđanje geogenog radonskog potencijala" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):210-218.

Istraživanje korelacija sadržaja radionuklida i geohemijskih karakteristika zemljišta Vojvodine

Forkapić, Sofija; Vasin, Jovica; Bikit, Ištvan S.; Mrđa, Dušan; Bikit, Kristina; Milić, Stanko

(Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе, 2017)

TY  - CONF
AU  - Forkapić, Sofija
AU  - Vasin, Jovica
AU  - Bikit, Ištvan S.
AU  - Mrđa, Dušan
AU  - Bikit, Kristina
AU  - Milić, Stanko
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8275
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - U ovom rаdu prikazani su rezultati istraživanja moguće korelаcije geohemijskih
kаrаkteristikа zemljišta i sadržaja prirodnih rаdionuklida 238U, 226Ra, 232Th i 40K, kаo i
radionuklida antropogenog porekla 137Cs u svim geomorfološkim jedinicama zemljišta
na području Vojvodine. Tokom 2001. godine izvršen je detaljan monitoring
radioaktivnosti zemljišta na 50 odabranih lokacija prema tipu zemljišta sa analizom
mehaničkog sastava zemljišta i sadržaja humusa i pristupačnog fosfora i kalijuma.
Kako bi se ispitao potencijаlni uticаj obrаde poljoprivrednog zemljišta i vremenskih
uslovа nа migrаciju i distribuciju rаdionuklidа prisutnih u zemljištu, monitoring
zemljišta je na istim lokacijama ponovljen 2010. godine. Glavni zaključak ovih
istraživanja je da izmerene maksimalne koncentracije aktivnosti radionuklida: 238U (87
Bq/kg), 226Ra (44,7 Bq/kg), 232Th (55,5 Bq/kg) i 137Cs (29 Bq/kg) u profilu zemljišta
dubine 30 cm ne ugrožavaju bezbednost proizvodnje hrane na ovom zemljištu. Utvrđena
je najveća zavisnost koncentracije aktivnosti kalijuma 40K od sadržaja gline u
poljoprivrednom zemljištu.
AB  - In this paper, we performed, for the first time, detailed study of Vojvodina’s soil in
order to explore possible correlations of soil geochemical characteristics and
radionuclide activity concentrations. The aim of this study is to analyze the content of
natural radioisotopes 238U, 226Ra, 232Th and 40K, as well as artificial radioisotope 137Cs
in all soil types originated from the same parent material – loess. The sampling
locations were selected so that they are proportionately represented all
geomorphological units: two mountains, four loess plateaus, three loess terraces, four
alluvial plains, two sandstone terrains. The process of genesis of soil and cultivation
mode plays a dominant role on the characteristics of the soil. However intensive
agricultural production and the use of high mineral fertilizers have caused that the
same type of soil contains different concentrations of available phosphorus and
radionuclides. Comparison of activity concentrations between different types of soil
confirmed that the presence of clay mostly contributes to radionuclides content in the
soil. The main conclusion is that measured maximal activity concentrations for 238U (87
Bq/kg), 226Ra (44.7 Bq/kg), 232Th (55.5 Bq/kg) and 137Cs (29 Bq/kg) at 30 cm depth
could not endanger the safety of food production.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Istraživanje korelacija sadržaja radionuklida i geohemijskih karakteristika zemljišta Vojvodine
T1  - Investigations of possible correlations between radionuclides content and geochemical characteristics of Vojvodina soil
SP  - 200
EP  - 209
ER  - 
@conference{
author = "Forkapić, Sofija and Vasin, Jovica and Bikit, Ištvan S. and Mrđa, Dušan and Bikit, Kristina and Milić, Stanko",
year = "2017",
abstract = "U ovom rаdu prikazani su rezultati istraživanja moguće korelаcije geohemijskih
kаrаkteristikа zemljišta i sadržaja prirodnih rаdionuklida 238U, 226Ra, 232Th i 40K, kаo i
radionuklida antropogenog porekla 137Cs u svim geomorfološkim jedinicama zemljišta
na području Vojvodine. Tokom 2001. godine izvršen je detaljan monitoring
radioaktivnosti zemljišta na 50 odabranih lokacija prema tipu zemljišta sa analizom
mehaničkog sastava zemljišta i sadržaja humusa i pristupačnog fosfora i kalijuma.
Kako bi se ispitao potencijаlni uticаj obrаde poljoprivrednog zemljišta i vremenskih
uslovа nа migrаciju i distribuciju rаdionuklidа prisutnih u zemljištu, monitoring
zemljišta je na istim lokacijama ponovljen 2010. godine. Glavni zaključak ovih
istraživanja je da izmerene maksimalne koncentracije aktivnosti radionuklida: 238U (87
Bq/kg), 226Ra (44,7 Bq/kg), 232Th (55,5 Bq/kg) i 137Cs (29 Bq/kg) u profilu zemljišta
dubine 30 cm ne ugrožavaju bezbednost proizvodnje hrane na ovom zemljištu. Utvrđena
je najveća zavisnost koncentracije aktivnosti kalijuma 40K od sadržaja gline u
poljoprivrednom zemljištu., In this paper, we performed, for the first time, detailed study of Vojvodina’s soil in
order to explore possible correlations of soil geochemical characteristics and
radionuclide activity concentrations. The aim of this study is to analyze the content of
natural radioisotopes 238U, 226Ra, 232Th and 40K, as well as artificial radioisotope 137Cs
in all soil types originated from the same parent material – loess. The sampling
locations were selected so that they are proportionately represented all
geomorphological units: two mountains, four loess plateaus, three loess terraces, four
alluvial plains, two sandstone terrains. The process of genesis of soil and cultivation
mode plays a dominant role on the characteristics of the soil. However intensive
agricultural production and the use of high mineral fertilizers have caused that the
same type of soil contains different concentrations of available phosphorus and
radionuclides. Comparison of activity concentrations between different types of soil
confirmed that the presence of clay mostly contributes to radionuclides content in the
soil. The main conclusion is that measured maximal activity concentrations for 238U (87
Bq/kg), 226Ra (44.7 Bq/kg), 232Th (55.5 Bq/kg) and 137Cs (29 Bq/kg) at 30 cm depth
could not endanger the safety of food production.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Istraživanje korelacija sadržaja radionuklida i geohemijskih karakteristika zemljišta Vojvodine, Investigations of possible correlations between radionuclides content and geochemical characteristics of Vojvodina soil",
pages = "200-209"
}
Forkapić, S., Vasin, J., Bikit, I. S., Mrđa, D., Bikit, K.,& Milić, S.. (2017). Istraživanje korelacija sadržaja radionuklida i geohemijskih karakteristika zemljišta Vojvodine. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 200-209.
Forkapić S, Vasin J, Bikit IS, Mrđa D, Bikit K, Milić S. Istraživanje korelacija sadržaja radionuklida i geohemijskih karakteristika zemljišta Vojvodine. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:200-209..
Forkapić, Sofija, Vasin, Jovica, Bikit, Ištvan S., Mrđa, Dušan, Bikit, Kristina, Milić, Stanko, "Istraživanje korelacija sadržaja radionuklida i geohemijskih karakteristika zemljišta Vojvodine" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):200-209.

Primena Monte-Karlo simulacija za in-situ gama spektrometriju

Mrđa, Dušan; Bikit, Kristina; Forkapić, Sofija; Bikit, Ištvan S.; Slivka, Jaroslav

(Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе, 2017)

TY  - CONF
AU  - Mrđa, Dušan
AU  - Bikit, Kristina
AU  - Forkapić, Sofija
AU  - Bikit, Ištvan S.
AU  - Slivka, Jaroslav
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8318
UR  - https://plus.sr.cobiss.net/opac7/bib/245691404
UR  - http://dzz.org.rs/wp-content/uploads/2013/06/Zbornik_XXIX_Simpozijum_DZZ_SCG_Srebrno_jezero_2.pdf
AB  - Kako bi se dobile krive efikasnosti detekcije za In-situ merenja gama zračenja poreklom
iz zemljišta, potrebno je izvršiti odgovarajuće Monte-Karlo simulacije. U simulacijama
je korišćena gustina zemljišta od 1,046 g/cm3
, dok je elementalni sastav zemljišta u
kojem se generiše gama zračenje bio: O - 47%, Si - 35%, Al - 8%, Fe – 3,9%, C – 2,1%,
Ca – 1,4%, K – 1,3%, N – 0,6%, Mg – 0,6%, N – 0,1%. Matrica zemljišta je predstavljena cilindričnom zapreminom prečnika 1,5 m i debljine 0,5 m, iznad koje je na visini
od 1 m postavljen germanijumski detektor. Razmatrane su homogene distribucije različitih radionuklida (Ra-226, Th-232, K-40) u matrici zemljišta. U simulacijama su
dobijeni i analizirani odgovarajući gama spektri, koji uz podatke o simuliranim efikasnostima detekcije, omogućuju poređenje sa realnim eksperimentalnim merenjima i
praktičnu primenu simulacionih rezultata.
AB  - In this work, the Monte-Carlo simulations for In-Situ gamma spectrometry of soil were
performed. The simulated gamma spectrum, originated from K-40, as well as from
members of Th-232 chain, and daughters of Ra-226, was obtained. We obtained the
corresponding detection efficiency curve for HPGe detector, which can be applied for
In-Situ measurement of radionuclide concentration in soil, assuming uniform
radionuclide distribution.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Primena Monte-Karlo simulacija za in-situ gama spektrometriju
T1  - Applying of Monte-Carlo simulations for in-situ gamma spectrometry
SP  - 477
EP  - 481
ER  - 
@conference{
author = "Mrđa, Dušan and Bikit, Kristina and Forkapić, Sofija and Bikit, Ištvan S. and Slivka, Jaroslav",
year = "2017",
abstract = "Kako bi se dobile krive efikasnosti detekcije za In-situ merenja gama zračenja poreklom
iz zemljišta, potrebno je izvršiti odgovarajuće Monte-Karlo simulacije. U simulacijama
je korišćena gustina zemljišta od 1,046 g/cm3
, dok je elementalni sastav zemljišta u
kojem se generiše gama zračenje bio: O - 47%, Si - 35%, Al - 8%, Fe – 3,9%, C – 2,1%,
Ca – 1,4%, K – 1,3%, N – 0,6%, Mg – 0,6%, N – 0,1%. Matrica zemljišta je predstavljena cilindričnom zapreminom prečnika 1,5 m i debljine 0,5 m, iznad koje je na visini
od 1 m postavljen germanijumski detektor. Razmatrane su homogene distribucije različitih radionuklida (Ra-226, Th-232, K-40) u matrici zemljišta. U simulacijama su
dobijeni i analizirani odgovarajući gama spektri, koji uz podatke o simuliranim efikasnostima detekcije, omogućuju poređenje sa realnim eksperimentalnim merenjima i
praktičnu primenu simulacionih rezultata., In this work, the Monte-Carlo simulations for In-Situ gamma spectrometry of soil were
performed. The simulated gamma spectrum, originated from K-40, as well as from
members of Th-232 chain, and daughters of Ra-226, was obtained. We obtained the
corresponding detection efficiency curve for HPGe detector, which can be applied for
In-Situ measurement of radionuclide concentration in soil, assuming uniform
radionuclide distribution.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Primena Monte-Karlo simulacija za in-situ gama spektrometriju, Applying of Monte-Carlo simulations for in-situ gamma spectrometry",
pages = "477-481"
}
Mrđa, D., Bikit, K., Forkapić, S., Bikit, I. S.,& Slivka, J.. (2017). Primena Monte-Karlo simulacija za in-situ gama spektrometriju. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 477-481.
Mrđa D, Bikit K, Forkapić S, Bikit IS, Slivka J. Primena Monte-Karlo simulacija za in-situ gama spektrometriju. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:477-481..
Mrđa, Dušan, Bikit, Kristina, Forkapić, Sofija, Bikit, Ištvan S., Slivka, Jaroslav, "Primena Monte-Karlo simulacija za in-situ gama spektrometriju" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):477-481.

Results of the 2015 national indoor radon intercomparison measurements in Serbia

Forkapic, Sofija; Bikit, Kristina; Arsić, Vesna; Ilić, Jovana; Pantelić, Gordana K.; Živanović, Miloš Z.

(2016)

TY  - JOUR
AU  - Forkapic, Sofija
AU  - Bikit, Kristina
AU  - Arsić, Vesna
AU  - Ilić, Jovana
AU  - Pantelić, Gordana K.
AU  - Živanović, Miloš Z.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1249
AB  - Results and conclusions of interlaboratory comparison of indoor radon in 2015 in Serbia are presented. The participants were three accredited laboratories from Serbia: Serbian Institute of Occupational Health Dr Dragomir Karajovic, Laboratory for Radioactivity and Dose Measurements at the Faculty of Sciences, University of Novi Sad and Radiation and Environmental Protection Department, Vinca Institute of Nuclear Science. The laboratories make use of the same method for radon measurement, using charcoal canisters according to US Environmental Protection Agency (EPA) protocol 520/5-87-005. Calibration of detection efficiency was performed using EPA radium standard. Radon activity concentrations were determined on the basis of the intensity of short-living radon daughters, Bi-214 and Pb-214, gamma lines. The results of intercomparison were evaluated by using the u-test, which was calculated according to the International Atomic Energy Agency criteria. In this paper, not only limitations but also the advantages and possibilities of application of this method for measuring levels of human exposure to radon are discussed.
T2  - Nukleonika
T1  - Results of the 2015 national indoor radon intercomparison measurements in Serbia
VL  - 61
IS  - 3
SP  - 321
EP  - 325
DO  - 10.1515/nuka-2016-0053
ER  - 
@article{
author = "Forkapic, Sofija and Bikit, Kristina and Arsić, Vesna and Ilić, Jovana and Pantelić, Gordana K. and Živanović, Miloš Z.",
year = "2016",
abstract = "Results and conclusions of interlaboratory comparison of indoor radon in 2015 in Serbia are presented. The participants were three accredited laboratories from Serbia: Serbian Institute of Occupational Health Dr Dragomir Karajovic, Laboratory for Radioactivity and Dose Measurements at the Faculty of Sciences, University of Novi Sad and Radiation and Environmental Protection Department, Vinca Institute of Nuclear Science. The laboratories make use of the same method for radon measurement, using charcoal canisters according to US Environmental Protection Agency (EPA) protocol 520/5-87-005. Calibration of detection efficiency was performed using EPA radium standard. Radon activity concentrations were determined on the basis of the intensity of short-living radon daughters, Bi-214 and Pb-214, gamma lines. The results of intercomparison were evaluated by using the u-test, which was calculated according to the International Atomic Energy Agency criteria. In this paper, not only limitations but also the advantages and possibilities of application of this method for measuring levels of human exposure to radon are discussed.",
journal = "Nukleonika",
title = "Results of the 2015 national indoor radon intercomparison measurements in Serbia",
volume = "61",
number = "3",
pages = "321-325",
doi = "10.1515/nuka-2016-0053"
}
Forkapic, S., Bikit, K., Arsić, V., Ilić, J., Pantelić, G. K.,& Živanović, M. Z.. (2016). Results of the 2015 national indoor radon intercomparison measurements in Serbia. in Nukleonika, 61(3), 321-325.
https://doi.org/10.1515/nuka-2016-0053
Forkapic S, Bikit K, Arsić V, Ilić J, Pantelić GK, Živanović MZ. Results of the 2015 national indoor radon intercomparison measurements in Serbia. in Nukleonika. 2016;61(3):321-325.
doi:10.1515/nuka-2016-0053 .
Forkapic, Sofija, Bikit, Kristina, Arsić, Vesna, Ilić, Jovana, Pantelić, Gordana K., Živanović, Miloš Z., "Results of the 2015 national indoor radon intercomparison measurements in Serbia" in Nukleonika, 61, no. 3 (2016):321-325,
https://doi.org/10.1515/nuka-2016-0053 . .