- 作者: 李基壽
- 作者服務機構: Nuclear Chemistry Analysis Center , Institute of Nuclear Energy Research, Lung-Tan, Taiwan, R.O.C.
- 中文摘要: A differential pulse polarographic method for the determination of nitrate ion has been developed. With 0.5M CaCl/sub 2/ as supporting electrolyte, NO/sub 3//sup -/ is reduced to give a peak with E/sub1/2/=-1.836 Volt vs. the Ag/ AgCl electrode. The differential pulse polarographic peak height is proportional to the nitrate concentration from 20 to 60 ppm. The detection limit for nitrate is 2 ppm in pure aqueous solution. In the determination of 40 ppm nitrate a relative precision (relative standard deviation) of less than 2% was achieved. Nitrite interferes seriously and should be absent if accurate results are required. The method has been applied to the determination of nitrate in Ammonium Uranyl Tricarbonate (AUT) Solution, results obtained by this method are compared to those obtained by ion chromatography. The agreement between the two sets of results suggests that the DPP method can be used with a fair degree of confidence.
- 英文摘要: --
- 中文關鍵字: Differential pulse polarography; 0.5M CaCl/sub 2/ as supporting electrolyte; nitrate analysis in AUT solution.
- 英文關鍵字: Differential pulse polarography; 0.5M CaCl/sub 2/ as supporting electrolyte; nitrate analysis in AUT solution.