- 作者: 鄭海金,李全民,白海鑫,劉國光
- 作者服務機構: College of Chemistry and Environmental Science, Henan Normal University, Key Laboratory of Environmental Pollution Control Technology of Henan Province, Xinxiang 453002, P. R. China
- 中文摘要: A new extraction flotation spectrum method for indirect determination of trace amounts of sulfide by ammonium sulfate-ethanol-water system was developed. It showed that Cu(II) could combine with S2- into precipitate (CuS) which was floated in the surface of ethanol and water in the presence of ammonium sulfate. The sulfide can be indirectly determined by determining the flotation yield of Cu(II). The linear range from 2.4 ’ 10-8 to 3.2 ’ 10-6 g/mL and the detect limit of 2.0 ’ 10-8 g/mL was achieved. The results showed the determination of S2- was not affected by Pb(II), Zn(II), Cd(II), Fe(II), Co(II), Ni(II), Mn(II) and Cl-, Br-, I-, etc. In the paper, the method was successfully applied to the determination of a trace amount of sulfide in polluted water samples with the advantages of simplicity of equipment, rapidity, low cost, etc.
- 英文摘要: --
- 中文關鍵字: Sulfide; Copper(II); Ethanol; Extraction; Flotation.
- 英文關鍵字: --