Application of ionic liquid modified carbon ceramic electrode for the sensitive voltammetric detection of rutin.
An ionic liquid (IL) modified carbon ceramic electrode (CCE) was designed and further used for the voltammetric detection of rutin in this paper. IL-CCE was prepared by mixing graphite powder with 1-butyl-3-methylimidazolium tetrafluoroborate (EMIMBF(4)) doped silicate sol-gel matrix together and further characterized by different methods. Then electrochemical behaviors of rutin on the IL-CCE were investigated by different electrochemical methods such as cyclic voltammetry and differential pulse voltammetry (DPV). Due to the presence of IL in the CCE, an enhanced electrochemical response of rutin appeared with a pair of well-defined redox peaks in pH 2.5 phosphate buffer solution (PBS). The electrochemical behaviors of rutin on the IL-CCE were carefully investigated. Under the selected conditions the oxidation peak currents exhibited good linear relationship with the rutin concentration in the range from 0.3 to 100.0 μmol/L with the detection limit as 0.09 μmol/L (3σ). The proposed method was further applied to the rutin tablets sample detection with satisfactory results.
Zhan
Tianrong
T
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, College of Chemistry and Chemical Engineering, Shandong University, Jinan 250000, China.
Sun
Xiaoying
X
Wang
Xiuzhen
X
Sun
Wei
W
Hou
Wanguo
W
D002021:Buffers; D002244:Carbon / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D055664:Electrochemical Techniques / Q000295:instrumentation / Q000379:methods; D004566:Electrodes; D006108:Graphite / Q000737:chemistry; D007093:Imidazoles / Q000737:chemistry; D052578:Ionic Liquids / Q000737:chemistry*; D057230:Limit of Detection; D012431:Rutin / Q000032:analysis*; D013607:Tablets / Q000032:analysis
C419324:1-butyl-3-methylimidazolium tetrafluoroborate; D002021:Buffers; D007093:Imidazoles; D052578:Ionic Liquids; D013607:Tablets; D012431:Rutin; D002244:Carbon; D006108:Graphite