- 作者: 王春風,關霞,李全民,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, 453007, P. R. China
- 中文摘要: A new method for indirect determination of captopril (CPT) with NaNO3 and NH4SCN by floatation and separation of copper has been studied. In the weak acid, a small amount of Cu(II) can be reduced to Cu(I) by CPT, then Cu(I) reacted with the SCN-, which can float on the surface of the liquid phase with NaNO3. A good linear relationship is observed between the floatation yield (E%) of Cu(II) and the amount of captopril. The linear range is 2~32 mg/L. On the ground, captopril can be indirectly determined by determining E(%) of Cu(II). The method is simple, rapid, reliable and has good selectivity. The developed method can be applied to indirect determination of captopril with satisfactory results.
- 英文摘要: --
- 中文關鍵字: Captopril; Sodium nitrate; Ammonium thiocyante; Floatation.
- 英文關鍵字: --