Combustion synthesis of sponge-like CeO<sub>۲</sub> powder for selective determination of uric acid in biological fluids
Publish place: Journal of Particle Science & Technology، Vol: 7، Issue: 2
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JPST-7-2_002
تاریخ نمایه سازی: 5 شهریور 1401
Abstract:
Sponge-like porous cerium oxide particles were prepared through the self-propagating high-temperature synthesis process. Then, the synthesized powder was used to modify the carbon paste electrode (CPE/porous CeO۲) for voltammetric determination of uric acid (UA) in biological fluids. Under optimal conditions, the linear concentration-response relationship was in the range of ۰.۲۵-۱۰ and ۱۰-۳۰۰ µM, and a detection limit of ۶۰ nM (S/N=۳) was obtained. In addition, the proposed sensor showed excellent selectivity towards UA over common co-existing species such as ascorbic acid, ibuprofen, dopamine, and acetaminophen. Good repeatability of sensor responses (Relative standard deviation (RSD) < ۳.۲%), superior reproducibility (RSD < ۲.۸%), and excellent storage stability (error < ۵% after ۱ month storage at room temperature) along with appropriate recovery values (in the range of ۹۹.۲ -۱۰۲.۷%) demonstrate the applicability of CPE/porous CeO۲ for the determination of UA levels in biological fluids.
Keywords:
Porous cerium oxide powder , Modified carbon paste electrode , Uric acid , Voltammetric determination
Authors
Zahra Hashemzaei
Inorganic Research Laboratory, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
Hamideh Saravani
Inorganic Research Laboratory, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
Mahmood Sharifitabar
Department of Materials Engineering, Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran
Mahdi Shahbakhsh
Analytical Research Laboratory, Department of Chemistry, University of Sistan and Baluchestan, Zahedan, Iran
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