Direct determination of brucine by square wave voltammetry on 4-amino-2-mercaptopyrimidine self-assembled monolayer gold electrode.
4-Amino-2-mercaptopyrimidine self-assembled monolayer (AMP SAMs/Au) was prepared on a gold electrode. The AMP SAMs/Au was characterized by using attenuated total reflection-fourier transform infrared (ATR-FTIR) and A.C. Impedance. The electrochemical behavior of brucine on AMP SAMs/Au was studied by cyclic voltammetry (CV) and square wave adsorptive stripping voltammetry (SWASV). The modified electrode showed an excellent electrocatalytic activity for the redox of brucine. The catalytic current increased linearly with the concentration of brucine in the range of 4.0 x 10(-7) to 2.0 x 10(-4) mol l(-1) by square wave voltammetry response. The detection limit was 6.0 x 10(-8) mol l(-1).
Zhang
Xiu-Hua
XH
Faculty of Chemistry and Material Science, Hubei University, Wuhan 430062, People's Republic of China.
Wang
Sheng-Fu
SF
Sun
Ni-Juan
NJ
D004563:Electrochemistry; D004566:Electrodes; D005295:Ferrocyanides / Q000494:pharmacology; D006046:Gold / Q000737:chemistry*; D015394:Molecular Structure; D010084:Oxidation-Reduction; D011743:Pyrimidines / Q000737:chemistry*; D012680:Sensitivity and Specificity; D017550:Spectroscopy, Fourier Transform Infrared; D013331:Strychnine / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D013438:Sulfhydryl Compounds / Q000737:chemistry*
C505203:4-amino-2-mercaptopyrimidine; D005295:Ferrocyanides; D011743:Pyrimidines; D013438:Sulfhydryl Compounds; C116383:ferrocyn; C083806:brucine; D006046:Gold; D013331:Strychnine