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I Giménez¹, J Rotger¹, E Apellániz¹

¹Departament d'Enginyeria Química i Química Analítica, Universitat de Barcelona, Marti i Franqués, 1-11, ES, 08028, Barcelona, Spain.

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|June 2, 2023

Summary

A new method using iodate precipitation and PSresins efficiently measures Strontium-90 (90Sr) in nuclear samples. This approach reduces hazardous waste and analysis time compared to traditional liquid scintillation counting (LSC).

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Area of Science:

Environmental Science
Analytical Chemistry
Nuclear Chemistry

Background:

Strontium-90 (90Sr) is a significant radioactive fission product with chemical similarities to calcium, posing environmental and safety concerns.
Current detection methods for 90Sr often rely on liquid scintillation counting (LSC), which requires chemical separation but generates mixed hazardous and radioactive waste.
Interference from Lead-210 (210Pb) is a challenge in alternative PSresin-based 90Sr analysis methods.

Purpose of the Study:

To develop an improved analytical method for Strontium-90 (90Sr) detection.
To address waste generation issues associated with traditional LSC methods.
To overcome interference from Lead-210 (210Pb) in PSresin-based analyses.

Main Methods:

A novel procedure involving iodate precipitation was developed to separate lead from strontium.
The separated strontium was then analyzed using PSresins.
The new method was validated by comparing its results with established LSC-based techniques.

Main Results:

The developed method effectively separated lead from strontium, mitigating interference in PSresin analysis.
The new procedure yielded results comparable to those obtained by conventional LSC methods.
The iodate precipitation and PSresin method demonstrated reduced analysis time and significantly less waste generation.

Conclusions:

The developed iodate precipitation coupled with PSresin separation offers an efficient and environmentally friendlier alternative for 90Sr analysis.
This method provides equivalent analytical accuracy to LSC while minimizing hazardous waste production.
The new technique is suitable for emergency and environmental control plans involving 90Sr monitoring.