Journal ArticleDOI
The simple radiochemical determination of 90Sr in environmental solid samples by solvent extraction
TLDR
In this article, an improved method is described for the determination of 90Sr in soil samples, through the separation of the daughter 90Y at equilibrium, which is based on the HDEHP solvent extraction in combination with liquid scintillation spectrometry (LSS).Abstract:
Determination of 90Sr in environmental solid samples is a challenging task because of the presence of so many other radionuclides in samples of interest. This problem was dealt with by radiochemical separation of strontium followed by yttrium separation and Cerenkov counting of the high-energy β-particle emissions of 90Y in order to quantitate 90Sr. In this work, an improved method is described for the determination of 90Sr in soil samples, through the separation of the daughter 90Y at equilibrium. The procedure is based on the HDEHP solvent extraction in combination with liquid scintillation spectrometry (LSS). A low background Quantulus has been optimized for low level counting of Cerenkov radiation emitted by the hard β-emitter 90Y. The analytical quality of the method has been checked by analyzing IAEA Soil-375 reference materials. The analytical method has also been successfully applied to the determination of 90Sr for moss-soil samples in inter-laboratory exercises through IAEA’s ALMERA network. The chemical recovery for 90Y extraction ranged from 80 to 85% and the counting efficiency was 73% in the window 25–400 keV.read more
Citations
More filters
Journal ArticleDOI
Rapid determination of 89,90Sr in wide range of activity concentration by combination of yttrium, strontium separation and Cherenkov counting
TL;DR: In this paper, a methodology for the rapid determination of 89,90Sr in wide range of activity concentration is given, which is based on simultaneous separation of strontium and yttrium from samples by mixed solvent anion exchange chromatography, mutual separation of 89Sr and 90Sr from 90Y by hydroxide precipitation and quantitative 89,89Sr determination by Cherenkov counting within 3 days.
Journal ArticleDOI
Selective removal of Sr(II) from saliferous radioactive wastewater by capacitive deionization.
TL;DR: In this paper , a chestnut shell derived porous carbon material modified with aryl diazonium salt (ADS) of sodium 4-aminoazobenzene-4'-sulfonate (SPAC) was developed as capacitive deionization electrode for selective removal of Sr2+ from saliferous radioactive wastewater.
Journal ArticleDOI
Geostandards and Geoanalytical Research Bibliographic Review 2011
TL;DR: The annual bibliographic review of GGR has a long tradition dating back to 1981, and this being the thirty-second instalment to appear, contains references to articles from geochemical, geological, environmental and chemical journals in which data of reference materials and certified RMs were published.
Journal ArticleDOI
Cherenkov counting of 90Sr and 90Y in bark and leaf samples collected around Fukushima Daiichi Nuclear Power Plant
Takumi Kubota,Yuji Shibahara,Satoshi Fukutani,Toshiyuki Fujii,Tomoko Ohta,Munehiko Kowatari,Satoshi Mizuno,Koichi Takamiya,Hajimu Yamana +8 more
TL;DR: The radioactivity of 90Sr and 137Cs in environmental samples, bark and leaf, collected around the Fukushima Daiichi Nuclear Power Plant in May 2013 was determined with the aim of investigating the migration of both nuclides using their radioactivity ratio as discussed by the authors.
Journal ArticleDOI
137Cs distribution in the South Caspian region, transfer to biota and dose rate assessment
TL;DR: According to a comprehensive environmental radioactivity survey in the South Caspian region, 137Cs distribution in water, sediment and soil were measured in the Anzali lagoon of the CaspIAN Sea, Ir... as mentioned in this paper.
References
More filters
Journal ArticleDOI
International basic safety standards for protection against ionizing radiation of and for the safety of radiation sources
TL;DR: Jointly sponsored by Food and Agriculture Organization of the United Nations International Atomic Energy Agency International Labour Organization Nuclear Energy Agency of the OECD Pan American Health Organization World Health Organization Status: Draft 3.5 as at the end of the BSS Secretariat meeting held in Vienna from 9–13 August 2010.
Journal ArticleDOI
Determination of radiostrontium isotopes: a review of analytical methodology.
Nóra Vajda,Chang-Kyu Kim +1 more
TL;DR: An overview about the development of the radiochemical procedures for the separation of strontium and/or yttrium including the classical procedure based on a series of semi-selective precipitations, the ion exchange and solvent extraction procedures and the recently developed extraction chromatographic ones offering high selectivity are given.
Journal ArticleDOI
Reference Material for Radionuclides in Sediment, IAEA-384 (Fangataufa Lagoon Sediment)
Pavel P. Povinec,M. K. Pham,Joan-Albert Sanchez-Cabeza,G. Barci-Funel,R. Bojanowski,T. Boshkova,William C. Burnett,Fernando P. Carvalho,B. Chapeyron,I. I. L. Cunha,Henning Dahlgaard,N. Galabov,L.K. Fifield,J. Gastaud,J. J. Geering,Idalia Gómez,Norman Whitaker Green,Terry F. Hamilton,F. L. Ibanez,M. Ibn Majah,Mina John,G. Kanisch,Timothy C. Kenna,M. Kloster,Matjaž Korun,L. Liong Wee Kwong,J. La Rosa,S.-H. Lee,I. Levy-Palomo,M. Malatova,Y. Maruo,Peter I. Mitchell,I. V. Murciano,Robert K. Nelson,A. Nouredine,J.-S. Oh,B. Oregioni,G. Le Petit,Håkan Pettersson,A. Reineking,P. A. Smedley,Axel Suckow,T. D. B. van der Struijs,P. I. Voors,K. Yoshimizu,E. Wyse +45 more
TL;DR: A reference material designed for the determination of anthropogenic and natural radionuclides in sediment, IAEA-384 (Fangataufa Lagoon sediment), is described and the results of certification are presented.
Toxicological profile for strontium
TL;DR: This edition supersedes any previously released draft or final profile and reflects a comprehensive and extensive evaluation, summary, and interpretation of available toxicologic and epidemiologic information on a substance.
Journal ArticleDOI
Soil and sediment sample analysis for the sequential determination of natural and anthropogenic radionuclides.
TL;DR: The results obtained for strontium-90, cesium-137, thorium-232, uranium-238, plutonium-239+240 and americium-241 isotopes provided excellent agreement with the recommended values and good chemical recoveries.