On-line solid phase extraction system using 1,10-phenanthroline immobilized on surfactant coated alumina for the flame atomic absorption spectrometric determination of copper and cadmium |
| |
Authors: | Ali Mohammed Haji Shabani Shayessteh Dadfarnia Zahra Dehghani |
| |
Institution: | Department of Chemistry, Yazd University, Safaieh, Yazd 89195-741, Iran |
| |
Abstract: | An on-line solid phase extraction (SPE) preconcentration system coupled to flame atomic absorption spectrometer (FAAS) was developed for determination of copper and cadmium at μg L−1 level. The method is based on the on-line retention of copper and cadmium on a microcolumn of alumina modified with sodium dodecyl sulfate (SDS) and 1,10-phenanthroline and subsequent elution with ethanol and determination by FAAS. The effect of chemical and flow variables that could affect the performance of the system was investigated. The relative standard deviation (n = 6) at 20 μg L−1 level for copper and cadmium were 1.4 and 2.2% and the corresponding limits of detection (based on 3σ) were 0.04 and 0.14 μg L−1, respectively. The method was successfully applied to determination of copper and cadmium in human hair and water samples. |
| |
Keywords: | Cadmium Copper Flow injection Atomic absorption spectrometry 1 10-Phenanthroline |
本文献已被 ScienceDirect 等数据库收录! |