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Updated: Apr 3, 2026

An Aptamer-based Sensor for Unchelated GadoliniumIII

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Published on: January 9, 2017

Radioanalytical method for ¹⁴⁸Gd analysis in environmental and bioassay samples.

Grzegorz Olszewski¹, Paulina Truszkowska², Ibtisam Yusuf³

¹University of Gdańsk, Faculty of Chemistry, Department of Environmental Chemistry and Radiochemistry, Laboratory of Toxicology and Radiation Protection, Wita Stwosza 63, Gdańsk, 80-308, Poland.

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

|April 2, 2026

Summary

A new radioanalytical method accurately measures Gadolinium-148 (¹⁴⁸Gd) in environmental samples. This technique enhances radiological emergency preparedness, particularly for facilities like the European Spallation Source (ESS).

Keywords:

(148)Gd Bioassay samples Environmental samples Gadolinium Radiochemical analysis Validation

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Area of Science:

Radiochemistry
Analytical Chemistry
Environmental Science

Background:

Accurate detection of pure alpha emitters like Gadolinium-148 (¹⁴⁸Gd) is crucial for radiological safety.
Existing methods may lack the sensitivity or adaptability for diverse environmental matrices.
Neutron spallation facilities require robust monitoring for potential radiological events.

Purpose of the Study:

To develop and validate a sensitive radioanalytical method for ¹⁴⁸Gd quantification.
To ensure preparedness for radiological emergencies at neutron spallation sources.
To provide a versatile method applicable to various environmental and bioassay samples.

Main Methods:

Multi-step ion exchange chromatography.
Extraction chromatography for selective separation.
Electrodeposition for high-purity alpha spectrometry source preparation.

Main Results:

Achieved high selectivity and sensitivity for ¹⁴⁸Gd detection.
Demonstrated adaptability across matrices including soil, water, and air filters.
Reported low minimum detectable activities (e.g., 0.23 mBq g⁻¹ for soil).
Chemical recoveries varied from 26% (air filters) to 60% (soil).

Conclusions:

The validated method provides a reliable tool for ¹⁴⁸Gd monitoring in environmental and bioassay samples.
This technique significantly contributes to radiological emergency preparedness and nuclear safety.
The method's adaptability suggests potential for analyzing other long-lived alpha emitters.