Ultrasensitive voltammetric determination of chrysin using an electropolymerized poly(bromocresol purple)-modified pencil graphite electrode
Microchemical Journal, cilt.228, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 228
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.microc.2026.119022
- Dergi Adı: Microchemical Journal
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Chemical Abstracts Core, Chimica, Index Islamicus, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Bromocresol purple, Chrysin, Differential pulse voltammetry, Electrochemical analysis, Pencil graphite electrode
- Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet
Özet
In this work, an electropolymerized poly(Bromocresol purple)-modified pencil graphite electrode (pol(BCP)/PGE) was developed as a sensitive and low-cost platform for the differential pulse voltammetric determination of Chrysin (CRYS) in real samples. The fabricated electrode was comprehensively characterized using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and Fourier-transform infrared spectroscopy (FT-IR). In comparison to the bare PGE, the pol(BCP)/PGE exhibited significantly enhanced electrocatalytic performance, which can be attributed to the increased density of electroactive sites and improved electron transfer kinetics between CRYS and the electrode surface. Differential pulse voltammetry (DPV) results demonstrated that the proposed method provides two linear concentration ranges (LCRs: 0.02–0.08 μM and 0.08–5.0 μM), a low limit of detection (LOD = 5.54 nM), and outstanding sensitivity (439.4 μA μM−1 cm−2). Furthermore, the developed platform showed acceptable selectivity in the presence of various potentially interfering ions and molecules. The applicability of the pol(BCP)/PGE sensor was successfully verified in pharmaceutical, environmental, and biological samples, yielding satisfactory accuracy and precision. Finally, the reliability of the proposed method was confirmed through validation against a standard reference technique.