Amperometric sensor based on carbon nanotube, ionic liquid, and polyaspartic acid for ascorbic acid determination
Küçük Resim Yok
Tarih
2024
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
An amperometric sensor for ascorbic acid determination has been developed by modifying the surface of a glassy carbon electrode (GCE) with polyaspartic acid (PolyAsp), carboxylated multi-walled carbon nanotube (c-MWCNT), and ionic liquid (IL, 1-butyl-3-methylimidazolium hexafluorophosphate). The amount of each modification material on the surface was optimized in order to achieve good analytical performance. The operating conditions of c-MWCNT-IL/PolyAsp/GCE were optimized. The performance characteristics of c-MWCNT-IL/PolyAsp/GCE were investigated at optimum pH (8.0) and optimum potential (+0.20 V), and the sensor responded linearly to ascorbic acid between 5.3-2766.3 mu M with a sensitivity of 19.64 mu A mM-1 and detection limit of 3.0 mu M. Determination of ascorbic acid in vitamin C tablet, vitamin C injection solution, and orange juice was successfully performed with the presented sensor and the recovery values were found between 98.9% and 101.6%. Fabrication steps of the c-MWCNT-IL/PolyAsp/GCE. image
Açıklama
Anahtar Kelimeler
amperometric sensor, ascorbic acid, carboxylated multi-walled carbon nanotubes, ionic liquid, polyaspartic acid
Kaynak
Journal of the Chinese Chemical Society
WoS Q Değeri
N/A
Scopus Q Değeri
Q3
