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FAAS slurry analysis of lead and copper ions preconcentrated on titanium dioxide nanoparticles coated with a silver shell and modified with cysteamine

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Abstract

We report on the separation and preconcentration of lead(II) and copper(II) ions using silver-coated titanium dioxide nanoparticles modified with cysteamine, and their determination by slurry analysis via flame atomic absorption spectrometry. The ions were adsorbed via a conventional batch technique, and the ion-loaded slurry was separated and directly introduced into the spectrometer, thereby eliminating a number of drawbacks. The effects of pH, amount of sorbent, slurry volume, sample volume and other ions on the recovery were investigated. Under optimized experimental conditions, copper and lead can be recovered within the 95% confidence level in certificated waste water, but also in spiked sea water samples. The technique is fast, simple, and leads to complete elution. The limit of detection (3δ, at n = 10) was 0.37 μg L−1 for Cu(II), and 0.38 μg L−1 for Pb(II).

We report on the separation and preconcentration of lead(II) and copper(II) ions using silver-coated titanium dioxide nanoparticles modified with cysteamine (Fig. 1), and their determination by slurry analysis via flame atomic absorption spectrometry. Under optimized experimental conditions, copper and lead can be recovered within the 95% confidence level in certificated waste water and spiked sea water samples. The technique is fast, simple, and leads to complete elution. Figure 1. Schematic illustration of the preparation of TiO2@Ag–Cysteamine nanoparticles and inset shows the color of the nanoparticles.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Arts and Sciences, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey

    Aslı Baysal, Aslı Deniz Saatci & Suleyman Akman

  2. Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, Kayisdagi, 34755, Istanbul, Turkey

    Mehmet Kahraman

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  1. Aslı Baysal
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  2. Aslı Deniz Saatci
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  4. Suleyman Akman
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Correspondence to Suleyman Akman.

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Baysal, A., Saatci, A.D., Kahraman, M. et al. FAAS slurry analysis of lead and copper ions preconcentrated on titanium dioxide nanoparticles coated with a silver shell and modified with cysteamine. Microchim Acta 173, 495–502 (2011). https://doi.org/10.1007/s00604-011-0586-3

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