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An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter
Published on: July 13, 2018
Determining gold in water by anion-exchange batch extraction
1U.S. Geological Survey, Box 25046, MS 955, Federal Center, Denver, Colorado 80225, USA.
Talanta
|April 1, 1986
Summary
This study presents a field-adaptable batch method for gold determination in natural waters. The procedure uses anion-exchange resin and atomic-absorption spectrophotometry, achieving a low determination limit of 1 ng/L.
Area of Science:
- Environmental Chemistry
- Analytical Chemistry
Background:
- Accurate gold quantification in natural waters is crucial for environmental monitoring.
- Existing methods may lack field adaptability or sensitivity.
Purpose of the Study:
- To develop and validate a robust batch procedure for determining gold in natural waters.
- To adapt the method for field operations.
Main Methods:
- Water samples are filtered, acidified, and equilibrated with an anion-exchange resin.
- Gold is eluted, evaporated, and extracted using specific chemical solutions.
- Final quantification is performed using electrothermal atomization in an atomic-absorption spectrophotometer.
Main Results:
- The developed batch procedure is fully adaptable to field operations.
- The method achieves a sensitive limit of determination for gold at 1 ng/L.
Conclusions:
- The described method provides a reliable and sensitive approach for on-site gold analysis in natural waters.
- This technique enhances the capability for environmental gold monitoring.
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