Nanometer-size titanium dioxide separation/preconcentration and FAAS determination of trace Zn and Cd in water sample
- 15 March 2004
- journal article
- research article
- Published by Taylor & Francis in International Journal of Environmental Analytical Chemistry
- Vol. 84 (4) , 315-321
- https://doi.org/10.1080/03067310310001640456
Abstract
A new method using nanoparticle TiO2 as solid-phase extractant coupled with FAAS was proposed for preconcentration and determination of trace Zn and Cd. The effects of pH, contact time, elution solution and interfering ions on the adsorption behavior of nanometer TiO2 towards Zn and Cd were investigated. Under optimum conditions, nanometer TiO2 possesses a significant capacity for the sorption of the metal ions studied. The limits of detection (3δ) of this method were 1.8 ng mL−1 of Zn and 3.0 ng mL−1 of Cd with an enrichment factor of 12.5, and relative standard deviations were 3.8% and 4.3% for Zn and Cd, respectively (c = 0.5 µg mL−1, n = 9). The proposed method was validated by the analysis of water certified reference material.Keywords
This publication has 30 references indexed in Scilit:
- 1,8-Dihydroxyanthraquinone anchored on silica gel: synthesis and application as solid phase extractant for lead(II), zinc(II) and cadmium(II) prior to their determination by flame atomic absorption spectrometryTalanta, 2002
- Cadmium removal from aqueous solutions by chitin: kinetic and equilibrium studiesWater Research, 2002
- Analysis for Cd, Cu, Ni, Zn, and Mn in estuarine water by inductively coupled plasma mass spectrometry coupled with an automated flow injection systemAnalytica Chimica Acta, 2002
- Determination of Trace Metal Ions in SeaWater by Atomic Absorption Spectrometry After Separation/Preconcentration with Calmagite on Amberlite Xad-1180International Journal of Environmental Analytical Chemistry, 2002
- Comparison of metal pre-concentration on immobilized Kelex-100 and quadruple inductively coupled plasma mass spectrometric detection with direct double focusing inductively coupled plasma mass spectrometric measurements for ultratrace multi-element determinations in sea-waterAnalytica Chimica Acta, 2001
- Zinc and Disease of the BrainMolecular Neurobiology, 2001
- On-line separation and sequential determination of trace amounts of heavy metals in biological materials by flow injection inductively coupled plasma atomic emission spectrometryJournal of Analytical Atomic Spectrometry, 1996
- Flow configurations for interfacing automatic ion-exchange devices with sequential inductively coupled plasma atomic emission spectrometry: application to trace metal determination in pure alkali metal saltsJournal of Analytical Atomic Spectrometry, 1993
- Determination of molybdenum by flame and electrothermal atomisation atomic absorption spectrometry after complexation and sorption on activated carbonJournal of Analytical Atomic Spectrometry, 1990
- Pre-concentration of copper, cobalt and nickel with 3-methyl-1-phenyl-4-stearoyl-5-pyrazolone loaded on silica gelThe Analyst, 1990