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Citation: ZHENG Jian-Bin, GAO Min, FU Ye-Wei, GAO Hong. Application of Pyrrolidine Dithiocarbamic Ammonium in Oscillographic Determination of Metal Ions[J]. Chinese Journal of Applied Chemistry, ;2000, 17(6): 636-638. shu

Application of Pyrrolidine Dithiocarbamic Ammonium in Oscillographic Determination of Metal Ions

1.
Institute of Analytical Science, Northwest University, Xi'an 710069

Received Date: 13 March 2000
Available Online: 12 June 2000
Fund Project: 国家自然科学基金(29775018) (29775018)陕西省自然科学基金(98H07) (98H07)

Pyrrolidine dithiocarbamic ammonium can cause a sensitive incision on the cathodic branch of dE/dt-E oscillogram at -0.80 V(vs.SCE) in 0.1 mol/L KCl solution. When Co²⁺、Ni²⁺、Cd²⁺、Ga³⁺ and In³⁺ are present in KCl solution containing pyrrolidine dithiocarbamic ammonium the depth of the incision varies. A linear relationship between the incision depth and concentration of the metal ions is established and the second-order differential simple oscillographic voltammetry is applied to quantitative determination for these ions. The cobalt ion in molecular sieve is also determined with satisfactory results.
- metal ion,
- cobalt,
- oscillographic analysis,
- second-order differential simple oscillographic voltammetry,
- dithiocarbamic ammonium
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