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Related Experiment Video

Updated: Jul 5, 2026

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides

Separation of Uranium and Thorium for ²³⁰Th-U Dating of Submarine Hydrothermal Sulfides

Published on: May 20, 2019

Micro-column solid phase extraction to determine uranium and thorium in environmental samples.

Tsuey-Lin Tsai¹, Chun-Chih Lin, Tieh-Chi Chu

¹Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan.

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

|April 24, 2008

Summary

This summary is machine-generated.

This study introduces an efficient method using U/TEVA and TEVA resins for separating uranium and thorium isotopes in environmental samples. The technique ensures accurate analysis with high chemical recovery for both elements.

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Area of Science:

Environmental Science
Analytical Chemistry
Nuclear Chemistry

Background:

Accurate determination of uranium (U) and thorium (Th) isotopes is crucial for environmental monitoring.
Complex matrices in environmental samples often pose challenges for isotope separation and analysis.

Purpose of the Study:

To develop and validate an extraction chromatographic method for separating U and Th isotopes.
To analyze U and Th isotopes in geothermal water samples from Peito, Taiwan.

Main Methods:

Utilized U/TEVA and TEVA extraction chromatographic resins for isotope separation.
Employed sample pre-concentration, filtration, electroplating, and alpha-spectroscopy.
Optimized conditions for efficient separation and analysis.

Main Results:

Achieved complete separation of U and Th isotopes with acceptable chemical yields.
Demonstrated chemical recovery exceeding 55% for U and 65% for Th.
Obtained good energy resolution in alpha spectroscopy for accurate isotope quantification.

Conclusions:

The U/TEVA and TEVA resin-based method provides a simple, accurate, rapid, reliable, and robust approach for U and Th isotope analysis.
Recyclable columns contribute to the cost-effectiveness and efficiency of the analytical method.
This technique is suitable for analyzing alpha-emitting isotopes in complex environmental matrices like geothermal water.