Determination of Pb(II) Ion with a Novel, Highly Efficient Immobilized Arsenazo III in a Polymer Matrix

Authors

• Kholboeva Muyassar, Department of Chemical Engineering, Termez State University of Engineering and Agrotechnologies. Termez, UzbekistanFollow
• Smanova Zulayho, Faculty of Chemistry, National University of Uzbekistan, Tashkent, 100174, UzbekistanFollow
• Madatov O`tkir, Faculty of Chemistry, National University of Uzbekistan, Tashkent, 100174, UzbekistanFollow
• Yusupov Boburjon, Faculty of Chemistry, National University of Uzbekistan, Tashkent, 100174, UzbekistanFollow
• Abror Nomozov, Department of Chemical Engineering, Termez State University of Engineering and Agrotechnologies. Termez, Uzbekistan AND Department of Medical and Biological Chemistry, Termez branch of Tashkent State Medical University. Termez, 190111 UzbekistanFollow
• Sobirova Fotima, Faculty of Medicine, Alfrganus University. Tashkent, UzbekistanFollow
• Jalilov Fazliddin, Faculty of Medicine, Alfrganus University. Tashkent, UzbekistanFollow
• Daminov Oybek, Tashkent State Technical University named after Islam Karimov, University Street 2, Tashkent 100095, UzbekistanFollow

Abstract

In this study, a novel analytical reagent based on arsenazo III immobilized on a polymer matrix composed of polyacrylonitrile, polyethylene polyamine, and dichloroethane (PPD) was developed and applied for the spectrophotometric determination of Pb(II) ions. The proposed method demonstrated standard analytical and metrological characteristics for the highly accurate determination of Pb(II) ions, as evidenced by a relative standard deviation (Sr) of 0.06 and a minimum detectable concentration (C_min) of 0.24 μ g/L. The accuracy and reproducibility of the method were evaluated using Student's t-test and Fisher's F-test. Comparison of the experimental and tabulated values (experiment=1.09; t_table=2.83, F_experiment=2.52; Ftable=4.47) confirmed the reliability of the proposed analytical procedure. At pH 5.8 in an acetate buffer medium, the Pb(II)–arsenazo III complex immobilized on the PPD matrix exhibited a maximum analytical signal at a wavelength of 640 nm. The measurement results followed the Beer–Lambert–Bouguer law, showing a linear relationship in the Pb(II) concentration range of 0.04–2.4 μ g/mL. The method is simple, rapid, cost-effective, and allows direct Pb(II) ion determination in water samples with high sensitivity and selectivity.

Keywords

Beer-Lambert-Beer law, Highly selective sorption spectrophotometry, Lead detection, PPD sorbent, Water samples

Subject Area

Chemistry

Article Type

Article

First Page

1881

Last Page

1894

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite this Article

Muyassar, Kholboeva; Zulayho, Smanova; O`tkir, Madatov; Boburjon, Yusupov; Nomozov, Abror; Fotima, Sobirova; Fazliddin, Jalilov; and Oybek, Daminov (2026) "Determination of Pb(II) Ion with a Novel, Highly Efficient Immobilized Arsenazo III in a Polymer Matrix," Baghdad Science Journal: Vol. 23: Iss. 5, Article 24.
DOI: https://doi.org/10.21123/2411-7986.5308