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Updated: Jul 24, 2026
10:14
Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography
Published on: May 16, 2014
[Indirect determination of iodide by flame atomic absorption spectrometry]
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|August 30, 2003
Summary
A new method determines iodide using flame atomic absorption spectrometry (FAAS) by measuring copper after iodide precipitation. This accurate technique is effective for analyzing iodine in various food and pharmaceutical samples.
Area of Science:
- Analytical Chemistry
- Spectroscopy
Context:
- Accurate iodide determination is crucial for nutritional analysis and quality control.
- Existing methods may require complex procedures or specialized equipment.
Purpose:
- To develop a novel, indirect method for iodide quantification using flame atomic absorption spectrometry (FAAS).
- To establish a sensitive and reliable analytical technique for diverse sample matrices.
Summary:
- Iodide reacts with copper(I) to form insoluble copper iodide (CuI).
- The precipitate is dissolved in sodium thiosulfate (Na2S2O3), and copper content is measured via FAAS.
- Iodide concentration is calculated based on the determined copper levels, offering a linear range of 0–800 µg/mL with 0.7% RSD at 0.4 µg/mL.
Impact:
- The method demonstrates high accuracy and precision, with recovery rates between 99.9% and 100.3%.
- Successfully applied to real-world samples like iodized salt, cydiodine tablets, and laver.
- Provides a cost-effective and efficient alternative for routine iodide analysis.
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