title: Direct determination of brucine by square wave voltammetry on 4-amino-2-mercaptopyrimidine self-assembled monolayer gold electrode.
abstract: 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).
authors.affiliation: Faculty of Chemistry and Material Science, Hubei University, Wuhan 430062, People's Republic of China.
authors.forename: Xiu-Hua
authors.initials: XH
authors.lastname: Zhang
authors.forename: Sheng-Fu
authors.initials: SF
authors.lastname: Wang
authors.forename: Ni-Juan
authors.initials: NJ
authors.lastname: Sun
mesh_terms: 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*
chemical_list: C505203:4-amino-2-mercaptopyrimidine; D005295:Ferrocyanides; D011743:Pyrimidines; D013438:Sulfhydryl Compounds; C116383:ferrocyn; C083806:brucine; D006046:Gold; D013331:Strychnine