- 作者: --
- 作者服務機構: Department of Chemistry, Yazd University, Yazd 89195-741, Iran
- 中文摘要: A flow injection flame atomic absorption spectrometry system incorporating a microcolumn of rice bran was designed, and its capability for on-line trace enrichment of copper, cadmium and lead was studied. Analytes were deposited on the microcolumn by processing a standard or solution of analytes on the column. Injection of 250 μL of nitric acid (1 mol/L) then served to elute the retained species to FAAS. The procedure was successfully applied for determination of copper in tap water, well water and multivitamin tablets. The accuracy was assessed through recovery experiments and independent analysis by furnace-AAS. A sample volume of 20 mL of copper resulted in a preconcentration factor of 96; precision value at the 20 μg/L was 4.1%.
- 英文摘要: --
- 中文關鍵字: Copper determination; Rice bran; Microcolumn; On-line preconcentration; Flow injection.
- 英文關鍵字: --