International Journal of New Chemistry
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Determination of Pb (II) in Marine Salt Samples by a Coated Graphite Ion Selective Electrode Using 2,3-bis(acetoxymethyl)quinoxaline as the Ionophore

Document Type : Research Paper

Authors

Parisa Nilzan 1
Azar Mohasseb 2
Maryam Shakoori 3
Sharzad Shahrestani 4

1 Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran

2 Department of chemistry, Isfahan university, Isfahan, Iran.

3 Department of Soil Science, University of Zanjan, Zanjan, Iran

4 Department of Chemistry, Institute of Chemistry and Chemical Engineering, Tehran, Iran.

https://doi.org/10.22034/ijnc.2024.716403
Abstract
This research article presents the development and application of a coated graphite ion selective electrode for the determination of Pb (II) in marine salt samples. The electrode utilizes 2,3-bis(acetoxymethyl)quinoxaline as the ionophore, demonstrating high selectivity and sensitivity towards Pb (II) ions. The electrode was characterized for its electrochemical properties and analytical performance, showing a wide linear range (10-6 molL-1 to 10-1mol L-1) and low detection limit for (8×10-7 molL-1) Pb (II) detection. The method was validated through the analysis of marine salt samples, and the results were compared with those obtained using inductively coupled plasma mass spectrometry (ICP-MS). The proposed electrode offers a simple, cost-effective, and rapid alternative for the determination of Pb (II) in marine salt samples, with potential implications for environmental monitoring and public health protection.

Keywords

Pb (II)
Potentiometric sensor
Ion selective electrode
Marine Salt
Subjects
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International Journal of New Chemistry
Volume 12, Issue 2 - Serial Number 2
Winter 2025
Pages 166-172

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