Determination of90Sr in environmental and biological materials with combined HDEHP solvent extraction-low liquid scintillation counting technique

Bjørnstad, Helge E.; Lien, H.; Yu, Yu-Fu; Salbu, Brit

doi:10.1007/bf02037431

“…As being pure b-emitting radionuclide (E b,max = 546 keV), direct measurement of 90 Sr or the short-lived (64.1 h) daughter 90 Y using proportional counter or liquid scintillation spectrometer requires previous chemical separation and preconcentration. Up to now, several analytical methods have been developed and applied for the determination of 90 Sr in environmental and nuclear samples using various measuring techniques such as beta counting, liquid scintillation spectrometry (LSS) [15][16][17][18][19][20][21][22] and mass spectrometry (MS) [23,24]. Even though a number of radioanalytical methods for determining 90 Sr in environmental samples are available in the literature, low level determination of 90 Sr has always been complicated because of the presence of other radionuclides in samples of interest.…”

Section: Introductionmentioning

confidence: 99%

Determination of 90Sr via Cherenkov counting and modified Eichrom methods in bilberry matrix in the context of BIPM supplementary comparison

Aslan

¹

,

Yücel

²

,

Kahraman

³

et al. 2014

J Radioanal Nucl Chem

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Quantitative determination of 90 Sr in bilberry, a representative matrix for vegetables and fruits, by Cherenkov counting and modified Eichrom methods is presented. The compatibility of the two methods was checked through the measurement of the BIPM supplementary comparison bilberry sample (CCR(II)-S8). The activity concentration of 90 Sr in bilberry sample was measured as 153 ± 4 and 152 ± 7 Bq kg -1 by Cherenkov counting and modified Eichrom method, respectively which is in good agreement with the reference value, 153 ± 8 Bq kg -1 .

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Strontium: Radionuclides

Guillén¹,

Baeza²,

Salas³

2005

Encyclopedia of Inorganic Chemistry

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Strontium has several radioactive isotopes, with 90 Sr being the most important in the environment. This radionuclide dispersed worldwide as a consequence of the atmospheric nuclear weapon tests in the 1960s, and is locally enhanced owing to the accidents involving radioactive material. 90 Sr is a pure β‐emitter and it may be detected by several detection techniques (gas‐flow proportional, liquid scintillation, Cerenkov counting, and ICP‐MS), after an appropriate radiochemical separation. The environmental behavior of radiostrontium is governed by its chemical similarities to calcium. It is usually associated with the mobile and bioavailable fractions in soils, and with the low MW fraction in aquatic ecosystems. The potential human exposure to radiostrontium is mainly due to the ingestion of food, milk and cereals being the two major sources. This exposure can be reduced to some extent by the addition of calcium fertilizers to minimize the soil‐to‐plant transfer of radiostrontium, and by increasing cattle calcium intake to decrease the 90 Sr content in milk.

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Strontium: Radionuclides

Guillén¹,

Baeza²,

Salas³

2011

Encyclopedia of Inorganic and Bioinorganic Chemistry

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Strontium has several radioactive isotopes, with 90 Sr being the most important in the environment. This radionuclide dispersed worldwide as a consequence of the atmospheric nuclear weapon tests in the 1960s, and is locally enhanced owing to the accidents involving radioactive material. 90 Sr is a pure β‐emitter and it may be detected by several detection techniques (gas‐flow proportional, liquid scintillation, Cerenkov counting, and ICP‐MS), after an appropriate radiochemical separation. The environmental behavior of radiostrontium is governed by its chemical similarities to calcium. It is usually associated with the mobile and bioavailable fractions in soils, and with the low MW fraction in aquatic ecosystems. The potential human exposure to radiostrontium is mainly due to the ingestion of food, milk and cereals being the two major sources. This exposure can be reduced to some extent by the addition of calcium fertilizers to minimize the soil‐to‐plant transfer of radiostrontium, and by increasing cattle calcium intake to decrease the 90 Sr content in milk.

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Determination of90Sr in environmental and biological materials with combined HDEHP solvent extraction-low liquid scintillation counting technique

Cited by 35 publications

References 5 publications

Determination of 90Sr via Cherenkov counting and modified Eichrom methods in bilberry matrix in the context of BIPM supplementary comparison

Determination of 90Sr via Cherenkov counting and modified Eichrom methods in bilberry matrix in the context of BIPM supplementary comparison

Strontium: Radionuclides

Strontium: Radionuclides

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