- 作者: --
- 作者服務機構: Department of Chemistry, Islamic Azad University, Shahrood Branch, Shahrood, Iran
- 中文摘要: A facile, reliable and reproducible method for speciation and determination of the traces amounts of chromium(III) in waste water has been developed. The method was based on complex formation on the surface of the ENVI-18 DSKTM disks followed by stripping of the retained species by minimum amounts of appropriate organic solvents. The elution was efficient and quantitative. The effects of potential interfering ions, pH, ligand amount, stripping solvent, and sample flow rate were also investigated. Under the optimal experimental conditions, the break-through volume was found to be about 1500 mL providing a preconcentration factor of 300. The maximum capacity of the disks was found to be 225 ± 3.9 μg for Cr3+. A limit of detection of 0.02 ng.mL -1 was obtained, and the method was applied for determination of chromium in electroplating industries waste water located in the eastern regions of Tehran.
- 英文摘要: --
- 中文關鍵字: Chromium(III) speciation; Solid phase extraction; Flame atomic absorption spectrometry.
- 英文關鍵字: --