Vitorovic Gordana - Academia.edu (original) (raw)

Uploads

Papers by Vitorovic Gordana

Research paper thumbnail of In-vitro 137Cs sorption by natural and monoionic forms of clinoptilolite

Acta Veterinaria, 2000

The objective of the present study was to evaluate the 137Cs binding capacity of natural and diff... more The objective of the present study was to evaluate the 137Cs binding capacity of natural and different monoionic forms of clinoptilolite in vitro, in a highly acid solution prepared to be similar to that within the stomach of swine. With the lower clinoptilolite concentration (100 mg) half of the initial 137Cs activity was sorbed during first 6 hours of incubation (48,9 %). Prolongation of the time of contact did not decrease solution activity. Using higher clinoptilolite concentrations (300 mg and 500 mg) the equilibrium of 137Cs ions was also established after 6 hours, but 75 % and 84 % of the initial 137Cs activity was sorbed. The similar efficiencies (84-85 %) found for natural and prepared forms of clinoptilolite indicated that there is no need to prepare mono-ionic forms .

Research paper thumbnail of Radioecological investigation of food of animal origin in Belgrade environment

The Japanese journal of veterinary research, 2009

The activity concentrations of 40K, 238U, 232Th and 137Cs were measured using gamma spectrometric... more The activity concentrations of 40K, 238U, 232Th and 137Cs were measured using gamma spectrometric method in different food chain samples from Serb Belgrade environment during the periods May-June 2007 and May-June 2008 year. Relatively high activities of 40K and 137Cs were detected in the soil. These results indicate that 137Cs is present in Belgrade environment even 20 years after nuclear accident in Chernobyl. However, in the samples of feedstuffs, animal products and bio indicators (meat of wild animals and fish), activity concentrations of primordial radionuclides and 137Cs were low and below the detection limits. Results of these trials have shown that investigated animal products from the natural environment around Belgrade, are radioactivity safe.

Research paper thumbnail of The efficiency of the radiocesium binders-AFCF and clinoptilolite in broiler chickens exposed to alimentary contamination with 137Cs

Acta veterinaria, 2004

Various radioprotective agents are used with the aim of protecting animal and food of animal orig... more Various radioprotective agents are used with the aim of protecting animal and food of animal origin from radioactive contamination. The most efficient radiocaesium binder in animals is ammonium ferric hexacyanoferrate (AFCF). Based on the results obtained so far it can be concluded that the protection efficiency of AFCF in broiler meat and liver was 88%, after a single 137 Cs contamination, followed by immediate AFCF administration via gastric tube, while when mixed in the feed pellets this rate increased to 95%. In broiler chickens given clinoptilolite via gastric tube, the protection efficiency for meat and liver was 50%, while clinoptilolite mixed in the feed pellets showed the lowest protection efficiency in meat and liver of only 28%.

Research paper thumbnail of Natural radionuclides in mineral fertilizers and farmland

Veterinarski glasnik, 2013

Savremena poljoprivredna proizvodnja se bazira na upotrebi mineralnih |ubriva, koja mogu imati vi... more Savremena poljoprivredna proizvodnja se bazira na upotrebi mineralnih |ubriva, koja mogu imati visoke aktivnosti prirodnih radionuklida i usloviti pojavu tehnolo{ki povi{ene radioaktivnosti. U cilju odre|ivanja uticaja primene mineralnih |ubriva na koncentraciju radionuklida u obradivom zemlji{tu, gamaspektrometrijskom metodom odre|ivana je aktivnost prirodnih radionuklida ( 40 K, 238 U, 226 Ra) u mineralnim |ubrivima iz uvoza, obradivom i neobradivom zemlji{tu sa podru~ja prigradskih op{tina grada Beograda. Dobijeni rezultati su pokazali da se u ispitivanim mineralnim |ubrivima izmerena aktivnost 40 K kretala od 70 do 4590 Bq/kg, 238 U od 18 do 1400 Bq/kg i 226 Ra od 15 do 999 Bq/kg. U obradivom zemlji{tu prose~ne aktivnosti prirodnih radionuklida su 626 Bq/kg za 40 K, 54 Bq/kg za 238 U, 55 Bq/kg za 226 Ra i 55 Bq/kg za 232 Th, a u neobradivom zemlji{tu 596 Bq/kg za 40 K, 54 Bq/kg za 238 U, 54 Bq/kg za 226 Ra i 53 Bq/kg za 232 Th. Srednje vrednosti radijumskog ekvivalenta aktivnosti (175 Bq/kg) i indeksa radijacionog rizika (0,48) ukazuju na to da na ispitivanim lokacijama ne postoji zna~ajni radijacioni rizik za stanovni{tvo usled terestrijalnog izlaganja. Ova istra`ivanja su pokazala i da dosada{nja upotreba mineralnih |ubriva nije uzrokovala povi{enje prirodne radioaktivnosti na ispitivanim oranicama.

Research paper thumbnail of In-vitro 137Cs sorption by natural and monoionic forms of clinoptilolite

Acta Veterinaria, 2000

The objective of the present study was to evaluate the 137Cs binding capacity of natural and diff... more The objective of the present study was to evaluate the 137Cs binding capacity of natural and different monoionic forms of clinoptilolite in vitro, in a highly acid solution prepared to be similar to that within the stomach of swine. With the lower clinoptilolite concentration (100 mg) half of the initial 137Cs activity was sorbed during first 6 hours of incubation (48,9 %). Prolongation of the time of contact did not decrease solution activity. Using higher clinoptilolite concentrations (300 mg and 500 mg) the equilibrium of 137Cs ions was also established after 6 hours, but 75 % and 84 % of the initial 137Cs activity was sorbed. The similar efficiencies (84-85 %) found for natural and prepared forms of clinoptilolite indicated that there is no need to prepare mono-ionic forms .

Research paper thumbnail of Radioecological investigation of food of animal origin in Belgrade environment

The Japanese journal of veterinary research, 2009

The activity concentrations of 40K, 238U, 232Th and 137Cs were measured using gamma spectrometric... more The activity concentrations of 40K, 238U, 232Th and 137Cs were measured using gamma spectrometric method in different food chain samples from Serb Belgrade environment during the periods May-June 2007 and May-June 2008 year. Relatively high activities of 40K and 137Cs were detected in the soil. These results indicate that 137Cs is present in Belgrade environment even 20 years after nuclear accident in Chernobyl. However, in the samples of feedstuffs, animal products and bio indicators (meat of wild animals and fish), activity concentrations of primordial radionuclides and 137Cs were low and below the detection limits. Results of these trials have shown that investigated animal products from the natural environment around Belgrade, are radioactivity safe.

Research paper thumbnail of The efficiency of the radiocesium binders-AFCF and clinoptilolite in broiler chickens exposed to alimentary contamination with 137Cs

Acta veterinaria, 2004

Various radioprotective agents are used with the aim of protecting animal and food of animal orig... more Various radioprotective agents are used with the aim of protecting animal and food of animal origin from radioactive contamination. The most efficient radiocaesium binder in animals is ammonium ferric hexacyanoferrate (AFCF). Based on the results obtained so far it can be concluded that the protection efficiency of AFCF in broiler meat and liver was 88%, after a single 137 Cs contamination, followed by immediate AFCF administration via gastric tube, while when mixed in the feed pellets this rate increased to 95%. In broiler chickens given clinoptilolite via gastric tube, the protection efficiency for meat and liver was 50%, while clinoptilolite mixed in the feed pellets showed the lowest protection efficiency in meat and liver of only 28%.

Research paper thumbnail of Natural radionuclides in mineral fertilizers and farmland

Veterinarski glasnik, 2013

Savremena poljoprivredna proizvodnja se bazira na upotrebi mineralnih |ubriva, koja mogu imati vi... more Savremena poljoprivredna proizvodnja se bazira na upotrebi mineralnih |ubriva, koja mogu imati visoke aktivnosti prirodnih radionuklida i usloviti pojavu tehnolo{ki povi{ene radioaktivnosti. U cilju odre|ivanja uticaja primene mineralnih |ubriva na koncentraciju radionuklida u obradivom zemlji{tu, gamaspektrometrijskom metodom odre|ivana je aktivnost prirodnih radionuklida ( 40 K, 238 U, 226 Ra) u mineralnim |ubrivima iz uvoza, obradivom i neobradivom zemlji{tu sa podru~ja prigradskih op{tina grada Beograda. Dobijeni rezultati su pokazali da se u ispitivanim mineralnim |ubrivima izmerena aktivnost 40 K kretala od 70 do 4590 Bq/kg, 238 U od 18 do 1400 Bq/kg i 226 Ra od 15 do 999 Bq/kg. U obradivom zemlji{tu prose~ne aktivnosti prirodnih radionuklida su 626 Bq/kg za 40 K, 54 Bq/kg za 238 U, 55 Bq/kg za 226 Ra i 55 Bq/kg za 232 Th, a u neobradivom zemlji{tu 596 Bq/kg za 40 K, 54 Bq/kg za 238 U, 54 Bq/kg za 226 Ra i 53 Bq/kg za 232 Th. Srednje vrednosti radijumskog ekvivalenta aktivnosti (175 Bq/kg) i indeksa radijacionog rizika (0,48) ukazuju na to da na ispitivanim lokacijama ne postoji zna~ajni radijacioni rizik za stanovni{tvo usled terestrijalnog izlaganja. Ova istra`ivanja su pokazala i da dosada{nja upotreba mineralnih |ubriva nije uzrokovala povi{enje prirodne radioaktivnosti na ispitivanim oranicama.