Utilizing copper-doped graphene quantum dots as a fluorescent sensor for determination of carbamazepine in exhaled breath condensate

IF 3.1 3区医学 Q2 CHEMISTRY, ANALYTICAL

Journal of pharmaceutical and biomedical analysis Pub Date : 2025-03-10 DOI:10.1016/j.jpba.2025.116815

Aylar Keyvani , Vahid Jouyban-Gharamaleki , Maryam Khoubnasabjafari , Jafar Soleymani , Elaheh Rahimpour , Abolghasem Jouyban

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引用次数: 0

Abstract

Carbamazepine is a versatile pharmaceutical used mainly for epilepsy and mood stabilization, but like all medications, it requires careful monitoring due to its potential side effects and interactions. In the current work, a fluorescent nanosensor was developed for the carbamazepine determination in the exhaled breath condensate (EBC). The nanosensor consists of graphene quantum dots doped with copper (Cu-doped GQDs). The presence of carbamazepine significantly decreased the fluorescence of Cu-doped GQDs, resulting in a quenching effect within a concentration range of 0.02–2.0 µg/mL, which occurs due to dynamic, rather than static, quenching according to Stern–Volmer plot. The relative standard deviations for intra-day and inter-day analysis of carbamazepine were 1.8 % and 4.8 %, respectively. The validated sensor was effectively employed for carbamazepine analysis in EBC of patients receiving the drug.

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来源期刊

Journal of pharmaceutical and biomedical analysis 医学-分析化学

CiteScore

6.70

自引率

5.90%

发文量

588

审稿时长

37 days

期刊介绍： This journal is an international medium directed towards the needs of academic, clinical, government and industrial analysis by publishing original research reports and critical reviews on pharmaceutical and biomedical analysis. It covers the interdisciplinary aspects of analysis in the pharmaceutical, biomedical and clinical sciences, including developments in analytical methodology, instrumentation, computation and interpretation. Submissions on novel applications focusing on drug purity and stability studies, pharmacokinetics, therapeutic monitoring, metabolic profiling; drug-related aspects of analytical biochemistry and forensic toxicology; quality assurance in the pharmaceutical industry are also welcome. Studies from areas of well established and poorly selective methods, such as UV-VIS spectrophotometry (including derivative and multi-wavelength measurements), basic electroanalytical (potentiometric, polarographic and voltammetric) methods, fluorimetry, flow-injection analysis, etc. are accepted for publication in exceptional cases only, if a unique and substantial advantage over presently known systems is demonstrated. The same applies to the assay of simple drug formulations by any kind of methods and the determination of drugs in biological samples based merely on spiked samples. Drug purity/stability studies should contain information on the structure elucidation of the impurities/degradants.