Croatica Chemica Acta, Vol. 86 No. 3, 2013.
Izvorni znanstveni članak
https://doi.org/10.5562/cca2094
Electrochemical Behaviors of Methocarbamol at an Acetylene Black-Ionic Liquid Modified Carbon Paste Electrode and its Electrochemical Determination
Yan-Mei Zhang
; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, People’s Republic of China
Wei You
; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, People’s Republic of China
Zuo-Ning Gao
; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, People’s Republic of China
Tian-Lin Yang
; College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, 750021, People’s Republic of China
Sažetak
Electrochemical behaviors of methocarbamol (MET) at the bare carbon paste electrode (CPE), acetylene black (AB) modified carbon paste electrode (AB/CPE), an ionic liquid 1-Benzyl-3-Methylimidazole hexafluorophosphate ([BnMIM]PF6) modified carbon paste electrode ([BnMIM]PF6/ CPE) and AB-[BnMIM]PF6 modified carbon paste electrode (AB-[BnMIM]PF6/CPE) in PBS (pH = 6.8) were investigated by cyclic voltammetry (CV) and square wave voltammetric (SWV). The experimental results showed that MET at the above metioned four electrodes showed an irreversible electrochemical oxidation process, but at the AB-[BnMIM]PF6/CPE, the oxidation peak potential keep almost constant and the oxidation peak current of MET increased greatly. At the same time, the electro¬chemical kinetic parameters were determined. Under the optimized electrochemical experimental condi¬tions, the oxidation peak currents were proportional to MET concentration range from 4.0 10–5 to 1.0 10–2 mol L–1 with the detection limit (S/N = 3) of 1.5 10–6 mol L–1. The proposed method was success¬fully applied in the determination of MET content in commercial tablet samples. (doi: 10.5562/cca2094)
Ključne riječi
AB-[BnMIM]PF6/CPE; Methocarbamol; Electrochemical behaviors; Electrochemical determination
Hrčak ID:
111602
URI
Datum izdavanja:
20.11.2013.
Posjeta: 2.092 *