Počet záznamů: 1
Determination of 129 I in biomonitors collected in the vicinity of a nuclear power plant by neutron activation analysis
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SYSNO ASEP 0388890 Druh ASEP J - Článek v odborném periodiku Zařazení RIV Záznam nebyl označen do RIV Poddruh J Ostatní články Název Determination of 129 I in biomonitors collected in the vicinity of a nuclear power plant by neutron activation analysis Tvůrce(i) Krausová, Ivana (UJF-V) RID, ORCID, SAI
Kučera, Jan (UJF-V) RID, ORCID, SAI
Světlík, Ivo (UJF-V) RID, ORCID, SAICelkový počet autorů 3 Zdroj.dok. Journal of Radioanalytical and Nuclear Chemistry. - : Springer - ISSN 0236-5731
Roč. 293, 13Sep2012 (2012), s. 1-6Poč.str. 6 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Iodine-129 ; neutron activation analysis ; biomonitor ; nuclear power plant ; Thyroid gland Vědní obor RIV CB - Analytická chemie, separace CEP GBP108/12/G108 GA ČR - Grantová agentura ČR LM2011019 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UJF-V - RVO:61389005 DOI 10.1007/s10967-012-2200-5 Anotace Neutron activation analysis (NAA) was used to determine 129 I and the 129 I/ 127 I ratio in bovine thyroid, moss, and river sediment samples collected in the vicinity of the Temelı´n nuclear power plant (NPP) in south Bohemia. The NAA procedures comprised pre-irradiation separation of 129 I by combustion of the samples in the stream of oxygen at 1,000 C and trapping the liberated iodine in a LiOH/ (NH4 )2SO3 solution. Post-irradiation separation of 130 I produced by the reaction 129 I(n,c) 130 I was carried out by extraction of elementary iodine with chloroform followed by precipitation of PdI2. Nondestructive, epithermal NAA was used to determine 127 I employing the 127 I(n,c) 128 I reaction. The results showed that mean values of 129 I and the 129 I/ 127 I ratio in the bovine thyroids varied from 22 to 61 mBq kg -1 (dry mass) and 2.8 9 10 -9 to 5.4 9 10 -9 , respectively. These values are close to the lower end of results reported from various regions non-polluted with 129 I. No significant differences were found between 129 I concentrations and the 129 I/ 127 I ratios in the bovine thyroids collected prior to the start and after several years of operation of the NPP. The mean value and standard deviation of 129 I in mBq kg -1 , dry mass and the 129 I/ 127 I ratio in moss Pleurozium schreberi were 23 ± 16 and 2.3 9 10 -9 , respectively, whereas values of 129 I in the river sediments were below 8–10 mBq kg -1 (dry mass) after several years of the NPP operation. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2013
Počet záznamů: 1