TY  - CONF
AU  - Kuzmanović, Predrag
AU  - Čeliković, Igor T.
AU  - Forkapić, Sofija
AU  - Todorović, Nataša
AU  - Filipović Petrović, Leposava
AU  - Mrđa, Dušan
AU  - Knežević, Jovana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11128
AB  - Phosphogypsum is a waste that is generated in the production of fertilizers and is very similar to the natural gypsum, thus its use in the construction industry is possible. It usually contains an increased concentration of 226Ra in its composition. The paper presents the results of measuring the radon emanation coefficients for phosphogypsum, natural gypsum and a mixture of natural gypsum and phosphogypsum (50%), that could be potentially used for the production of gypsum boards that are widely applied in construction. Using the method of gamma spectrometry the concentration of 226Ra in the samples was determined, while the concentration of emanated radon from the samples was measured in the specially constructed chambers of different volumes (1.5 l, 2.5 l, 4.25 l, and 30 l), using active radon monitors RAD7 (Durridge Company) and RTM1688-2 (Sarad GmbH). Radon emanation measurements were performed for about 100 cycles of 1 h, after which the emanation curve was fit and the equilibrium concentration of radon activity after one month was theoretically estimated. The effect of chamber volumes on the obtained values of the radon emanation coefficient was investigated. On the basis of the obtained emanation coefficients, it is concluded that these values are strongly dependent on the volume of the measuring chamber and that they increase with expanding the chamber volume. Therefore, it is recommended to use larger volumes of measuring chambers when determining the emanation coefficient for phosphogypsum or natural gypsum. In this way, the real conditions in rooms that are potentially constructed of such materials are better represented, while at the same time the existing effect is neglected.
PB  - RAD Centre, Niš, Serbia
C3  - RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
T1  - Determination of radon emanation for phosphogypsum produced in Serbia
SP  - 199
DO  - 10.21175/rad.abstr.book.2021.28.21
ER  - 

@conference{
author = "Kuzmanović, Predrag and Čeliković, Igor T. and Forkapić, Sofija and Todorović, Nataša and Filipović Petrović, Leposava and Mrđa, Dušan and Knežević, Jovana",
year = "2021",
abstract = "Phosphogypsum is a waste that is generated in the production of fertilizers and is very similar to the natural gypsum, thus its use in the construction industry is possible. It usually contains an increased concentration of 226Ra in its composition. The paper presents the results of measuring the radon emanation coefficients for phosphogypsum, natural gypsum and a mixture of natural gypsum and phosphogypsum (50%), that could be potentially used for the production of gypsum boards that are widely applied in construction. Using the method of gamma spectrometry the concentration of 226Ra in the samples was determined, while the concentration of emanated radon from the samples was measured in the specially constructed chambers of different volumes (1.5 l, 2.5 l, 4.25 l, and 30 l), using active radon monitors RAD7 (Durridge Company) and RTM1688-2 (Sarad GmbH). Radon emanation measurements were performed for about 100 cycles of 1 h, after which the emanation curve was fit and the equilibrium concentration of radon activity after one month was theoretically estimated. The effect of chamber volumes on the obtained values of the radon emanation coefficient was investigated. On the basis of the obtained emanation coefficients, it is concluded that these values are strongly dependent on the volume of the measuring chamber and that they increase with expanding the chamber volume. Therefore, it is recommended to use larger volumes of measuring chambers when determining the emanation coefficient for phosphogypsum or natural gypsum. In this way, the real conditions in rooms that are potentially constructed of such materials are better represented, while at the same time the existing effect is neglected.",
publisher = "RAD Centre, Niš, Serbia",
journal = "RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro",
title = "Determination of radon emanation for phosphogypsum produced in Serbia",
pages = "199",
doi = "10.21175/rad.abstr.book.2021.28.21"
}

Kuzmanović, P., Čeliković, I. T., Forkapić, S., Todorović, N., Filipović Petrović, L., Mrđa, D.,& Knežević, J.. (2021). Determination of radon emanation for phosphogypsum produced in Serbia. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro
RAD Centre, Niš, Serbia., 199.
https://doi.org/10.21175/rad.abstr.book.2021.28.21

Kuzmanović P, Čeliković IT, Forkapić S, Todorović N, Filipović Petrović L, Mrđa D, Knežević J. Determination of radon emanation for phosphogypsum produced in Serbia. in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro. 2021;:199.
doi:10.21175/rad.abstr.book.2021.28.21 .

Kuzmanović, Predrag, Čeliković, Igor T., Forkapić, Sofija, Todorović, Nataša, Filipović Petrović, Leposava, Mrđa, Dušan, Knežević, Jovana, "Determination of radon emanation for phosphogypsum produced in Serbia" in RAD 2021 : 9th International Conference on Radiation in Various Fields of Research : book of abstracts; June 14-18; Herceg Novi, Montenegro (2021):199,
https://doi.org/10.21175/rad.abstr.book.2021.28.21 . .

TY  - CONF
AU  - Nikolov, Jovana
AU  - Todorović, Nataša
AU  - Stojković, Ivana
AU  - Tenjović, Branislava
AU  - Vraničar, Andrej
AU  - Knežević, Jovana
AU  - Vuković, Srđan
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8321
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  - Radon 222Rn nastaje kao produkt raspada 226Ra, rastvorljiv je u vodi i predstavlja jedan
od najzastupljenijih prirodnih izvora zračenja. Monitoring 222Rn u vodi za piće je važno
kontinuirano sprovoditi kako zbog hidrogeoloških studija tako i zbog procene
radiološkog rizika. Postoje različite metode merenja radona u vodi. Alfa
spektrometrijske metode su najzastupljenije, posebno se izdvaja RAD7 kao portabilni
alfa spektrometar koji omogućava merenja na terenu. Tečna scintilaciona
spektrometrija (LSC) se često preferira kao tehnika merenja 222Rn u uzorcima vode.
Sama metoda se sprovodi mešanjem uzoraka vode sa organskim scintilacionim
koktelom, koktel izaziva difuziju radona iz vodenog rastvora u organsku fazu jer radon
ima veći afinitet ka organskoj fazi, čime se sprečava emanacija radona iz vode. Pored
pomenutih metoda, i gama spektrometrijska metoda koja koristi sekularnu radioaktivnu
ravnotežu radona i njegovih potomaka daje zadovoljavajuće rezutlate. U ovom radu
biće prikazane prednosti i mane četiri različite metode merenja radona u vodi: dve LSC
metode (monofazna i dvofazna), RAD7 i gama spektrometrijska metoda. Pored
razčičitih tehnika merenja, u radu će biti prikazano i poređenje dve metode uzorkovanja
voda za analizu.
AB  - Radon 222Rn is formed as a product of decomposition of 226Ra, it is radioactive isotope
that is soluble in water and represents one of the most common natural sources of
radiation. Monitoring of 222Rn in drinking water is important to continuously implement
due to hydrogeological studies and also radiological risk assessment. There are
different methods of measuring radon in water. Alpha spectrometric methods are the
most commonly used, especially RAD7 as a portable alpha spectrometer that allows on
field measurements. Liquid scintillation spectrometry (LSC) is often preferred as a
technique of measuring 222Rn in water samples. The method itself is carried out by
mixing water samples with an organic scintillation cocktail. The cocktail causes the
radon diffusion from the aqueous solution to the organic phase because radon has a
higher affinity for the organic phase, thus preventing the emission of radon from the
water. In addition to the before mentioned methods, a gamma spectrometric method
that uses the secular radioactive equilibrium of radon and its daughter products gave us
satisfactory results. In this paper, the advantages and disadvantages of four different
methods of measuring radon in water will be shown: two LSC methods (monophase and
two-phase), RAD7 and gamma spectrometric method. All three methods have very low
minimal detectable activity (MDA) values, lower than 1 Bq l-1. In addition to the
different measurement techniques, a comparison of two methods for sampling of water
will be presented also on few examples.
PB  - Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе
C3  - 29. симпозијум ДЗЗСЦГ : зборник радова
T1  - Metode merenja Rn222 u vodi
T1  - Methods of Rn222 in water measurement
SP  - 500
EP  - 506
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8321
ER  - 

@conference{
author = "Nikolov, Jovana and Todorović, Nataša and Stojković, Ivana and Tenjović, Branislava and Vraničar, Andrej and Knežević, Jovana and Vuković, Srđan",
year = "2017",
abstract = "Radon 222Rn nastaje kao produkt raspada 226Ra, rastvorljiv je u vodi i predstavlja jedan
od najzastupljenijih prirodnih izvora zračenja. Monitoring 222Rn u vodi za piće je važno
kontinuirano sprovoditi kako zbog hidrogeoloških studija tako i zbog procene
radiološkog rizika. Postoje različite metode merenja radona u vodi. Alfa
spektrometrijske metode su najzastupljenije, posebno se izdvaja RAD7 kao portabilni
alfa spektrometar koji omogućava merenja na terenu. Tečna scintilaciona
spektrometrija (LSC) se često preferira kao tehnika merenja 222Rn u uzorcima vode.
Sama metoda se sprovodi mešanjem uzoraka vode sa organskim scintilacionim
koktelom, koktel izaziva difuziju radona iz vodenog rastvora u organsku fazu jer radon
ima veći afinitet ka organskoj fazi, čime se sprečava emanacija radona iz vode. Pored
pomenutih metoda, i gama spektrometrijska metoda koja koristi sekularnu radioaktivnu
ravnotežu radona i njegovih potomaka daje zadovoljavajuće rezutlate. U ovom radu
biće prikazane prednosti i mane četiri različite metode merenja radona u vodi: dve LSC
metode (monofazna i dvofazna), RAD7 i gama spektrometrijska metoda. Pored
razčičitih tehnika merenja, u radu će biti prikazano i poređenje dve metode uzorkovanja
voda za analizu., Radon 222Rn is formed as a product of decomposition of 226Ra, it is radioactive isotope
that is soluble in water and represents one of the most common natural sources of
radiation. Monitoring of 222Rn in drinking water is important to continuously implement
due to hydrogeological studies and also radiological risk assessment. There are
different methods of measuring radon in water. Alpha spectrometric methods are the
most commonly used, especially RAD7 as a portable alpha spectrometer that allows on
field measurements. Liquid scintillation spectrometry (LSC) is often preferred as a
technique of measuring 222Rn in water samples. The method itself is carried out by
mixing water samples with an organic scintillation cocktail. The cocktail causes the
radon diffusion from the aqueous solution to the organic phase because radon has a
higher affinity for the organic phase, thus preventing the emission of radon from the
water. In addition to the before mentioned methods, a gamma spectrometric method
that uses the secular radioactive equilibrium of radon and its daughter products gave us
satisfactory results. In this paper, the advantages and disadvantages of four different
methods of measuring radon in water will be shown: two LSC methods (monophase and
two-phase), RAD7 and gamma spectrometric method. All three methods have very low
minimal detectable activity (MDA) values, lower than 1 Bq l-1. In addition to the
different measurement techniques, a comparison of two methods for sampling of water
will be presented also on few examples.",
publisher = "Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе",
journal = "29. симпозијум ДЗЗСЦГ : зборник радова",
title = "Metode merenja Rn222 u vodi, Methods of Rn222 in water measurement",
pages = "500-506",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8321"
}

Nikolov, J., Todorović, N., Stojković, I., Tenjović, B., Vraničar, A., Knežević, J.,& Vuković, S.. (2017). Metode merenja Rn222 u vodi. in 29. симпозијум ДЗЗСЦГ : зборник радова
Београд : Институт за нуклеарне науке "Винча" : Друштво за заштиту од зрачења Србије и Црне Горе., 500-506.
https://hdl.handle.net/21.15107/rcub_vinar_8321

Nikolov J, Todorović N, Stojković I, Tenjović B, Vraničar A, Knežević J, Vuković S. Metode merenja Rn222 u vodi. in 29. симпозијум ДЗЗСЦГ : зборник радова. 2017;:500-506.
https://hdl.handle.net/21.15107/rcub_vinar_8321 .

Nikolov, Jovana, Todorović, Nataša, Stojković, Ivana, Tenjović, Branislava, Vraničar, Andrej, Knežević, Jovana, Vuković, Srđan, "Metode merenja Rn222 u vodi" in 29. симпозијум ДЗЗСЦГ : зборник радова (2017):500-506,
https://hdl.handle.net/21.15107/rcub_vinar_8321 .