title: Improved sensitivity for some [corrected] metal ions by use of sulfide in the Belousov-Zhabotinskii oscillating reaction.
abstract: A highly sensitive method for the determination of trace amounts of some [corrected] metal ions by use of sulfide in the Belousov-Zhabotinskii (B-Z) oscillating chemical reaction is proposed. The use of sulfide increased strongly the sensitivity of the B-Z reaction for some [corrected] metal ions, such as Ag+, Pb2+, Hg2+, Cd2+, Cu2+, and Bi3+. Results showed that the variational ratio of oscillating period (P(R)) is linearly proportional to the negative logarithm of concentration of metal ions. The detection limit is down to 10(-12) mol L(-1). Various influencing factors on the determination were also examined.
authors.affiliation: College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China. jzgao@nwnu.edu.cn
authors.forename: Jinzhang
authors.initials: J
authors.lastname: Gao
authors.forename: Hua
authors.initials: H
authors.lastname: Chen
authors.forename: Hongxia
authors.initials: H
authors.lastname: Dai
authors.forename: Dongyu
authors.initials: D
authors.lastname: Lv
authors.forename: Jie
authors.initials: J
authors.lastname: Ren
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Wu
authors.initials: W
authors.lastname: Yang