期刊
IEEE SENSORS JOURNAL
卷 16, 期 9, 页码 2914-2921出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2016.2526609
关键词
Acetaminophen; electropolymerization; pencil graphite electrode; substituted pyrrole; voltammetry
资金
- Anadolu University Research Projects Commission [1401F016]
A novel and highly sensitive sensor based on poly[2, 5-di(2-thiophenyl)-1-p-(tolyl) pyrrole] was developed and successfully applied for the electrochemical determination of acetaminophen (AC) in pharmaceutical samples. The voltammetric behaviors of AC on modified pencil graphite electrode were investigated by cyclic voltammetry and differential pulse voltammetry in phosphate buffer solution. The voltammetric studies reveal that the polymer modified pencil graphite electrode possesses a remarkable electrocatalytic activity toward acetaminophen compared with the unmodified pencil graphite electrode. A linear dynamic range from 0.025 to 5 mu M and a correlation coefficient of 0.997 with a slope (sensitivity) of 23 mA M-1 were obtained for AC. The detection limit (S/N = 3) was determined as 1.94 nM, which shows a high sensitivity of the developed sensor for AC.
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