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Development of 148Gd analysis method using stable Gd.

Grzegorz Olszewski1, Patric Lindahl2, Peter Frisk2

  • 1Linköping University, Department of Health, Medicine and Caring Sciences, Division of Diagnostics and Specialist Medicine, 581 83, Linköping, Sweden; Swedish Radiation Safety Authority, Solna strandväg 96, 171 54, Solna, Sweden; University of Gdańsk, Faculty of Chemistry, Department of Environmental Chemistry and Radiochemistry, Laboratory of Toxicology and Radiation Protection, Wita Stwosza 63, 80-308, Gdańsk, Poland.

Talanta
|April 11, 2021
PubMed
Summary

A new analytical method was developed to measure Gadolinium-148 (¹⁴⁸Gd) in environmental and biological samples. This method utilizes advanced chromatography techniques and achieves a maximum recovery of 75% for Gadolinium determination.

Keywords:
(148)GdGadoliniumRadiochemical analysisSpallation

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Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry
  • Radiochemistry

Background:

  • Accurate determination of Gadolinium-148 (¹⁴⁸Gd) is crucial for environmental monitoring and bioassay.
  • Existing analytical methods may require refinement for specific sample matrices.

Purpose of the Study:

  • To develop and validate a robust analytical method for ¹⁴⁸Gd determination.
  • To enable accurate quantification of ¹⁴⁸Gd in diverse environmental and bioassay samples.

Main Methods:

  • Utilized a combination of anion exchange resin, extraction chromatography, and cation exchange resin.
  • Employed alkaline fusion for solid sample dissolution and calcium oxalate co-precipitation for liquid sample preconcentration.
  • Validated the method using natural Gadolinium (¹⁵⁷Gd) and Inductively Coupled Plasma - Triple Quadrupole Mass Spectrometry (ICP-QQQ-MS).

Main Results:

  • Successfully developed a multi-step chromatographic method for Gd separation and purification.
  • Achieved a maximum total method recovery of 75% for Gadolinium determination.
  • Demonstrated the applicability of the method for environmental and bioassay samples.

Conclusions:

  • The developed analytical method provides a reliable approach for ¹⁴⁸Gd quantification.
  • The method's effectiveness in sample preparation and purification was confirmed.
  • Further application of this method can enhance environmental surveillance and human exposure assessments related to Gadolinium isotopes.