title: The enhanced electrogenerated chemiluminescence of Ru(bpy)3(2+) by glutathione on a glassy carbon electrode modified with some porphine compounds.
abstract: It has been found that the electrochemical activity of glutathione was increased greatly at the glassy carbon electrodes modified with 5,10,15,20-tetraphenylporphine ruthenium(II) carbenyl (RuTPP), meso-tetraphenylporphine copper(II) complex (CuTTP) and hemin. It has been also found that glutathione would enhance the electrogenerated chemiluminescence (ECL) of Ru(bpy)3(2+) at a hemin glassy carbon electrode; the enhanced ECL intensity was linear with the concentration of glutathione in the range of 1 x 10(-7)-1 x 10(-4) mol l-1, based on which method for determination of glutathione has been developed. The detection limit of glutathione was 2 x 10(-8) mol l-1, and the relative standard deviation for 1 x 10(-6) mol l-1 glutathione was 2.7%. The mechanism for this ECL system has been proposed.
authors.affiliation: Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China. gnchen@fzu.edu.cn
authors.forename: C G
authors.initials: CG
authors.lastname: Nana
authors.forename: W
authors.initials: W
authors.lastname: Jian
authors.forename: C
authors.initials: C
authors.lastname: Xi
authors.forename: D J
authors.initials: DJ
authors.lastname: Pinga
authors.forename: Z Z
authors.initials: ZZ
authors.lastname: Feng
authors.forename: C H
authors.initials: CH
authors.lastname: Qing
mesh_terms: D004566:Electrodes; D005978:Glutathione / Q000032:analysis*; D006801:Humans; D008163:Luminescent Measurements
chemical_list: D005978:Glutathione