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Accumulation and Analysis of Cuprous Ions in a Copper Sulfate Plating Solution
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Derivative spectrophotometric method for copper determination.

M Inés Toral1, P Richter, B Muñoz

  • 1Department of Chemistry, Faculty of Sciences, University of Chile, Las Palmeras no. 3425, P.O. Box 653, Santiago, Chile.

Environmental Monitoring and Assessment
|November 8, 2013
PubMed
Summary
This summary is machine-generated.

This study presents a simple, sensitive method for determining trace copper in water using solvent extraction and derivative spectrophotometry. The technique accurately quantifies copper down to 2.3 ng/ml, proving effective for water analysis.

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Area of Science:

  • Analytical Chemistry
  • Environmental Chemistry

Background:

  • Accurate determination of trace copper in water is crucial for environmental monitoring.
  • Existing methods may lack sensitivity or selectivity for microamount copper analysis.

Purpose of the Study:

  • To develop a simple, sensitive, and selective method for determining microamounts of copper in water.
  • To validate the method's efficacy in real-world water samples.

Main Methods:

  • Solvent extraction of copper using 3-(4-phenyl-2-pyridinyl-5-phenyl-1,2,4-triazine) (PPT) and picrate at pH 8.0 into 1,2-dichloroethane.
  • Determination of copper using first derivative spectrophotometry.
  • Analysis of various water types.

Main Results:

  • Quantification of copper in the range of 7.5-350 ng/ml.
  • Achieved a detection limit of 2.3 ng/ml (3σ).
  • Demonstrated low relative standard deviations (<2.0%).

Conclusions:

  • The proposed solvent extraction-first derivative spectrophotometry method is effective for trace copper determination in water.
  • The method offers high sensitivity and selectivity, suitable for environmental water analysis.