Determination of 90Sr in environmental samples using solid phase extraction chromatography

Pant, Amar D.; Ruhela, R.; Tomar, B.S.; Anilkumar, S.

doi:10.1007/s10967-019-06546-1

Cited by 4 publications

(5 citation statements)

References 17 publications

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“…The sample was then sequentially eluted with aqueous solutions of (NH 4 ) 2 DCyTA (0.04 M, pH 5) and NH 4 Cl (0.374 M, pH 5), and, lastly, strontium was recovered with no less than 130 mL of (NH 4 ) 2 EDTA (0.062 M, pH 6). From this recovered strontium fraction, EDTA was removed (acid precipitation) and conditions were optimized for the near-quantitative recovery of strontium using commercially available resin containing an 18-crown-6 ether which has been shown to be highly selective for strontium under acidic conditions (stage 2). − This optimization process, including an examination of resin cartridge reusability, is presented in the Supporting Information (S18–S19, Tables S1–S3) and described in Section . At an elution rate of 5–6 mL·min –1 , the average strontium recovery after ten experiments (96.8 ± 0.8%) compares favorably to that determined on a single-use basis at the same flow rate (94.9 ± 2.0%), suggesting no detrimental effect with modest reusage.…”

Section: Resultsmentioning

confidence: 99%

Scalable Dialysis-Based Method for the Isolation of Strontium from Milk for Radioanalysis

Cooke

Czechura

Cook

2023

ACS Food Sci. Technol.

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An ashless dialysis-based method for the convenient and timely removal of strontium from milk for radioanalysis has been described for samples ranging from 100 to 500 mL following a brief (30 min) treatment with formaldehyde solution. Overall strontium recovery is suitably high and remarkably consistent across all sample sizes (81–84%), with the final isolation of strontium from milk comfortably achieved within 32 h. For strontium carrier quantification and quality assurance purposes, two chromatographic high-pressure ion chromatography methods were developed to fully resolve strontium from the cationic mineral constituents of milk, as well as yttrium, while method validation was performed with a certified reference material (IAEA-152 milk powder) containing strontium-90. This methodology is highly amenable to concurrent multisample processing which, considering its scalability, makes it well-suited to environmental surveillance of radiostrontium in milk for both routine and emergency response applications.

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Section: Resultsmentioning

confidence: 99%

Scalable Dialysis-Based Method for the Isolation of Strontium from Milk for Radioanalysis

Cooke

Czechura

Cook

2023

ACS Food Sci. Technol.

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“…Then, yttrium is precipitated as an oxalate, and only the activity of 90 Y is the subject of subsequent measurements. There are also other potential procedures involving ion-exchange and extraction chromatography [8,9,[14][15][16]. One strategy was developed based on forming a strontium complex with crown ether (4,4'(5')-di-t-butyl--cyclohexano-18-crown-6), which is very selective for strontium [8,9,[14][15][16].…”

Section: Rapid 90 Sr Quantifi Cation Methods Based On the Bateman Equ...mentioning

confidence: 99%

“…There are also other potential procedures involving ion-exchange and extraction chromatography [8,9,[14][15][16]. One strategy was developed based on forming a strontium complex with crown ether (4,4'(5')-di-t-butyl--cyclohexano-18-crown-6), which is very selective for strontium [8,9,[14][15][16]. Commonly employed detectors mostly use proportional gas fl ow and liquid scintillation counters [9,10,16].…”

Section: Rapid 90 Sr Quantifi Cation Methods Based On the Bateman Equ...mentioning

confidence: 99%

Rapid ⁹⁰Sr quantification method based on the Bateman equation for routine laboratory work

2022

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Artificially introduced into the environment 90Sr is highly radiotoxic, so its content levels in foodstuff and biota require constant monitoring for radiological protection. Most analytical procedures used for 90Sr determination are time-consuming, and therefore, a faster approach is needed. Employing the Bateman equation enables more efficient exploitation of the secular equilibrium between 90Sr and its daughter radionuclide 90Y in the calculations. This article describes a method for computing the 90Sr activity concentration, while accounting for 90Y activity. The developed approach was tested and validated in terms of its applicability in everyday analysis.

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“…The radionuclide 90 Sr, characterized by radiotoxicity, high heat generation, and a long half-life of 28.8 years, is a βemitter generated by uranium and plutonium fission reactions in nuclear reactors [2][3][4]. As an alkaline-earth cation with chemical properties similar to calcium, 90 Sr easily accumulates in human bones [5,6]. 90 Y, a daughter nuclide of 90 Sr, produces high-energy β particles that can damage the bone marrow.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Density Functional Theory Studies of Aluminosilicate-Based Ceramic Solidified Products for Sr Immobilization

Wu,

Sang,

Zheng

et al. 2023

Toxics

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Strontium is a common radionuclide in radioactive waste, and its release into the environment can cause enormous damage to the ecosystem environment. In this study, the natural mineral allophane was selected as the substrate to prepare solidified ceramic products by cold pressing/sintering to solve the problem of the final disposal of radioactive strontium. Ceramic solidified products with various crystal structures were successfully prepared, and the microscopic morphology and energy-dispersive spectroscopy images of the samples showed a uniform distribution of Sr in the solidified products. Sr2Al2SiO7 and SrAl2Si2O8, which can stably solidify strontium, were formed in the solidified products, and the structural characteristics and stability of the above-mentioned substances were analyzed from the perspective of quantum chemical calculations using density functional theory. The calculation results showed that the overall deformation resistance of Sr2Al2SiO7 was higher than that of SrAl2Si2O8. Considering the isomorphic substitution effect of CaO impurities, we inferred that a mixed-crystalline structure of Ca2−xSrxAl2SiO7 may be present in the solidified products.

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Determination of 90Sr in environmental samples using solid phase extraction chromatography

Cited by 4 publications

References 17 publications

Scalable Dialysis-Based Method for the Isolation of Strontium from Milk for Radioanalysis

Scalable Dialysis-Based Method for the Isolation of Strontium from Milk for Radioanalysis

Rapid ⁹⁰Sr quantification method based on the Bateman equation for routine laboratory work

Preparation and Density Functional Theory Studies of Aluminosilicate-Based Ceramic Solidified Products for Sr Immobilization

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Determination of 90Sr in environmental samples using solid phase extraction chromatography

Cited by 4 publications

References 17 publications

Scalable Dialysis-Based Method for the Isolation of Strontium from Milk for Radioanalysis

Scalable Dialysis-Based Method for the Isolation of Strontium from Milk for Radioanalysis

Rapid 90Sr quantification method based on the Bateman equation for routine laboratory work

Preparation and Density Functional Theory Studies of Aluminosilicate-Based Ceramic Solidified Products for Sr Immobilization

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Rapid ⁹⁰Sr quantification method based on the Bateman equation for routine laboratory work