Citation: Hua CHEN, Wu YANG, Hong Xia DAI, Xiao Xia WEI, Jie QU, Jin Zhang GAO. Determination of Some Heavy-metal-ions Using a Sulfur Ion Modified BZ Oscillating System[J]. Chinese Chemical Letters, ;2006, 17(9): 1221-1224. shu

Determination of Some Heavy-metal-ions Using a Sulfur Ion Modified BZ Oscillating System

College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070

Received Date: 17 March 2006

Fund Project: This work was supported in part by the Project of International Cooperation between China and Ukraine (043-05), the National Natural Science Foundation (No. 20475044) and the Invention Project of Science & Technology (KJCXGC-01, NWNU), China.

A highly sensitive method is developed for the determination of trace amounts of some heavy metal ions in aqueous solution based on the classical Belousov-Zhabotinskii (BZ) oscillating chemical system. Introducing of S^2- ion makes the new oscillating system Ce(SO₄)₂-KBrO₃-CH₂(COOH)₂-Na₂S-H₂SO₄ have to a high sensitivity for some heavy metal ions such as Ag⁺, pb²⁺, Hg²⁺, Cd²⁺, Cu²⁺ and Bi³⁺ with detection limits down to 10^-12 mol·L^-1.
- BZ oscillating system,
- kinetic determination,
- heavy-metal-ion,
- sulfur ion
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