Determination of americium-241 in sediments by gamma spectroscopy
Određivanje americijuma-241 gama spektroskopijom
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Метаподаци
Приказ свих података о документуАпстракт
A radiochemical method is given for the determination of Am-241 from the global fallout in sediments. The concept of a concentration step to separate Am-241 from the bulk of the sample (1-2 kg wet) by coprecipitation followed by low energy gamma spectroscopy was investigated. A series of experiments with tracer added was performed to measure the recovery of americium by coprecipitation. Also, a number of real samples without tracer were examined and the conditions for the optimum separation are given. The applied gamma method and the conventional, accurate, but tedious, aplha technique via 243Am, which is usually applied for the determination of Am-241, agreed mostly within 10 %.
Ispitana je mogućnost prekoncentrisanja Am-241 iz velike mase sedimenta (1-2 kg) pre njegovog određivanja gama spektroskopijom. Separacija je vršena da bi se sav Am-241 izdvojio na pogodnom nosaču, odnosno da bi se dostigla granica osetljivosti instrumenta, jer je Am prisutan u sedimentima u izuzetno malim količinama (0,01-0,5 Bq/kg). Serijom eksperimenata sa obeleživačem određen je stepen separacije dobijen koprecipitacijom. Primena metode na uzorke sedimenata sa različitim sadržajem americijuma pokazala je da je slaganje rezultata dobijenih ovom metodom sa rezultatima dobijenim alfa spektroskopijom bilo 10%.
Кључне речи:
americium-241 / low energy gamma spectroscopy / sediments / preconcentrationИзвор:
Journal of the Serbian Chemical Society, 2000, 65, 5-6, 451-456Издавач:
- Serbian Chemical Society, Belgrade
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Ristić, Mirjana AU - Degeto, Sandro AU - Ast, Teodor PY - 2000 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/290 AB - A radiochemical method is given for the determination of Am-241 from the global fallout in sediments. The concept of a concentration step to separate Am-241 from the bulk of the sample (1-2 kg wet) by coprecipitation followed by low energy gamma spectroscopy was investigated. A series of experiments with tracer added was performed to measure the recovery of americium by coprecipitation. Also, a number of real samples without tracer were examined and the conditions for the optimum separation are given. The applied gamma method and the conventional, accurate, but tedious, aplha technique via 243Am, which is usually applied for the determination of Am-241, agreed mostly within 10 %. AB - Ispitana je mogućnost prekoncentrisanja Am-241 iz velike mase sedimenta (1-2 kg) pre njegovog određivanja gama spektroskopijom. Separacija je vršena da bi se sav Am-241 izdvojio na pogodnom nosaču, odnosno da bi se dostigla granica osetljivosti instrumenta, jer je Am prisutan u sedimentima u izuzetno malim količinama (0,01-0,5 Bq/kg). Serijom eksperimenata sa obeleživačem određen je stepen separacije dobijen koprecipitacijom. Primena metode na uzorke sedimenata sa različitim sadržajem americijuma pokazala je da je slaganje rezultata dobijenih ovom metodom sa rezultatima dobijenim alfa spektroskopijom bilo 10%. PB - Serbian Chemical Society, Belgrade T2 - Journal of the Serbian Chemical Society T1 - Determination of americium-241 in sediments by gamma spectroscopy T1 - Određivanje americijuma-241 gama spektroskopijom EP - 456 IS - 5-6 SP - 451 VL - 65 UR - https://hdl.handle.net/21.15107/rcub_technorep_290 ER -
@article{ author = "Ristić, Mirjana and Degeto, Sandro and Ast, Teodor", year = "2000", abstract = "A radiochemical method is given for the determination of Am-241 from the global fallout in sediments. The concept of a concentration step to separate Am-241 from the bulk of the sample (1-2 kg wet) by coprecipitation followed by low energy gamma spectroscopy was investigated. A series of experiments with tracer added was performed to measure the recovery of americium by coprecipitation. Also, a number of real samples without tracer were examined and the conditions for the optimum separation are given. The applied gamma method and the conventional, accurate, but tedious, aplha technique via 243Am, which is usually applied for the determination of Am-241, agreed mostly within 10 %., Ispitana je mogućnost prekoncentrisanja Am-241 iz velike mase sedimenta (1-2 kg) pre njegovog određivanja gama spektroskopijom. Separacija je vršena da bi se sav Am-241 izdvojio na pogodnom nosaču, odnosno da bi se dostigla granica osetljivosti instrumenta, jer je Am prisutan u sedimentima u izuzetno malim količinama (0,01-0,5 Bq/kg). Serijom eksperimenata sa obeleživačem određen je stepen separacije dobijen koprecipitacijom. Primena metode na uzorke sedimenata sa različitim sadržajem americijuma pokazala je da je slaganje rezultata dobijenih ovom metodom sa rezultatima dobijenim alfa spektroskopijom bilo 10%.", publisher = "Serbian Chemical Society, Belgrade", journal = "Journal of the Serbian Chemical Society", title = "Determination of americium-241 in sediments by gamma spectroscopy, Određivanje americijuma-241 gama spektroskopijom", pages = "456-451", number = "5-6", volume = "65", url = "https://hdl.handle.net/21.15107/rcub_technorep_290" }
Ristić, M., Degeto, S.,& Ast, T.. (2000). Determination of americium-241 in sediments by gamma spectroscopy. in Journal of the Serbian Chemical Society Serbian Chemical Society, Belgrade., 65(5-6), 451-456. https://hdl.handle.net/21.15107/rcub_technorep_290
Ristić M, Degeto S, Ast T. Determination of americium-241 in sediments by gamma spectroscopy. in Journal of the Serbian Chemical Society. 2000;65(5-6):451-456. https://hdl.handle.net/21.15107/rcub_technorep_290 .
Ristić, Mirjana, Degeto, Sandro, Ast, Teodor, "Determination of americium-241 in sediments by gamma spectroscopy" in Journal of the Serbian Chemical Society, 65, no. 5-6 (2000):451-456, https://hdl.handle.net/21.15107/rcub_technorep_290 .