<abstract xmlns="http://www.w3.org/1999/xhtml">

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.
</abstract>

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.

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

Central Laboratory for Radiological Protection

Nukleonika

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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

Artificially introduced into the environment 90Sr is highly radiotoxic, so its content levels in foodstuff and biota require constant monitoring for...

Sample	Reference value (Bq·L⁻¹)	Bateman equation-based procedure (Bq·L⁻¹)
21SRB	3.11 ± 0.17	3.28 ± 0.56
21SRC	6.06 ± 0.34	6.06 ± 1.03

Fortification level (Bq·kg⁻¹)	Immediate				Delayed

	Mean (%)	Median (%)	SD (%)	n	Mean (%)	Median (%)	SD (%)	n
5	85	83	10	12	84	83	4	28
50	82	82	2	12	80	80	3	31
Total	83	82	7	24	82	81	4	59

Characteristics	Result
Linearity	100%
MDA	0.017 Bq·kg⁻¹
Recovery of ⁹⁰Sr	82%
Relative bias	−18%
Repeatability (CV)^a	8.5%
Reproducibility (CV)^a	9%
Combined standard uncertainty (k = 2)^b	17%

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

Article Category: Original Paper

Published Online: Dec 16, 2022

Page range: 67 - 72

Received: Jan 25, 2022

Accepted: Aug 17, 2022

DOI: https://doi.org/10.2478/nuka-2022-0006

Keywords
Bateman equation, Liquid scintillation, Strontium-90, Yttrium-90

© 2022 Karol Wiatr et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Results from the Procorad 2021 proficiency test

Statistical evaluation of the 90Sr recovery in immediate and delayed measurements

Validation characteristics of the applied method

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

Article Category: Original Paper

Published Online: Dec 16, 2022

Page range: 67 - 72

Received: Jan 25, 2022

Accepted: Aug 17, 2022

DOI: https://doi.org/10.2478/nuka-2022-0006

KeywordsBateman equation, Liquid scintillation, Strontium-90, Yttrium-90

© 2022 Karol Wiatr et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Fig. 2

Results from the Procorad 2021 proficiency test

Statistical evaluation of the 90Sr recovery in immediate and delayed measurements

Validation characteristics of the applied method

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

Keywords
Bateman equation, Liquid scintillation, Strontium-90, Yttrium-90