Flow Injection Solid Phase Extraction for Trace Metal Determination Using a Chelating Resin and Flame Atomic Absorption Spectrometry Detection
| Autor: | Norio Teshima, Georgia Giakisikli, Petros Zachariadis, Ioanna Kila, Aristidis N. Anthemidis |
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| Rok vydání: | 2015 |
| Předmět: |
Detection limit
Chelating resin Cadmium Chromatography Elution Metal ions in aqueous solution 010401 analytical chemistry Biochemistry (medical) Clinical Biochemistry chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Analytical Chemistry law.invention Chromium chemistry law Electrochemistry Solid phase extraction 0210 nano-technology Atomic absorption spectroscopy Spectroscopy |
| Zdroj: | Analytical Letters. 49:929-942 |
| ISSN: | 1532-236X 0003-2719 |
| DOI: | 10.1080/00032719.2015.1038547 |
| Popis: | The development of a simple and sensitive on-line flow injection preconcentration system is reported using a polyamino-polycarboxylic acid chelating resin for the automated determination of cadmium(II), chromium(III), copper(II), and lead(II) in natural waters and urine by flame atomic absorption spectrometry (FAAS). The adsorbent showed a high sorption affinity for the metal ions at pH values from 5.0 to 6.0. The retained analytes were efficiently eluted by 1.5 mol/L HNO3. The effect of chemical and hydrodynamic parameters such as pH, selection of eluent (type, volume and concentration), and sample/eluent flow rates were studied, providing optimum conditions for the analysis of real samples. For a preconcentration time of 120 sec, the sampling frequency was 22/h and the enhancement factors were 105, 49, 106, and 98 for cadmium(II), chromium(III), copper(II), and lead(II), respectively. The detection limits were between 0.1 and 1.6 mg/L, while the precision was less than 3.3% as the relative stand... |
| Databáze: | OpenAIRE |
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