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Updated: Jun 25, 2026

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Automated ⁹⁰Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

Published on: June 6, 2018

A rapid method for determining 89Sr and 90Sr by Cerenkov counting.

K Günther¹, S Lange, M Veit

¹Staatliche Betriebsgesellschaft für Umwelt und Landwirtschaft, Altwahnsdorf 12, 01445 Radebeul, Germany. Kathrin.Guenther@smul.sachsen.de

Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine

|March 3, 2009

Summary

This summary is machine-generated.

A new method simplifies strontium-89 and strontium-90 analysis in water and milk using alginate. This technique provides rapid results within four days, crucial for environmental and food safety monitoring.

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Area of Science:

Environmental Science
Radiochemistry
Analytical Chemistry

Background:

Strontium-89 ((89)Sr) and Strontium-90 ((90)Sr) are significant radioactive isotopes.
Accurate determination of these isotopes is vital for environmental monitoring and food safety.
Existing methods for (89)Sr and (90)Sr analysis can be time-consuming and complex.

Purpose of the Study:

To develop and validate a simple and efficient method for determining (89)Sr and (90)Sr.
To analyze (89)Sr and (90)Sr in environmental water and milk samples.
To reduce the time required for sample preparation and analysis.

Main Methods:

Utilized alginate for sample preparation in conjunction with Cerenkov counting.
Employed a Liquid Scintillation Counter (TRI-Carb 3170TR/SL) in low-level counting mode.
Developed a technique that bypasses the need for a long ingrowth period for the daughter nuclide (90)Y.

Main Results:

Achieved results for (89)Sr and (90)Sr within four days.
Established a detection limit of approximately 1 Bq/l for a 0.2l sample volume.
Successfully prepared milk samples without the necessity of ashing.

Conclusions:

The developed alginate-based method offers a simple and rapid approach for (89)Sr and (90)Sr determination.
This method is suitable for routine analysis of water and milk samples, enhancing monitoring capabilities.
The technique's efficiency and reduced preparation time make it a valuable tool for radiological surveillance.