Journal
FOOD CHEMISTRY
Volume 221, Issue -, Pages 1904-1910Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.09.073
Keywords
Nanoparticles; Solid phase microextraction; Titanium dioxide; Spectrophotometry; Atomic
Funding
- Payame Noor University, Mashhad, Iran
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In the present study, nano-sized titanium oxides were applied for preconcentration and determination of Pb(II) in aqueous samples using hollow fiber based solid-liquid phase microextraction (HF-SLPME) combined with flame atomic absorption spectrometry (FAAS). In this work, the nanoparticles dispersed in caprylic acid as an extraction solvent was placed into a polypropylene porous hollow fiber segment supported by capillary forces and sonification. This membrane was in direct contact with solutions containing Pb (II). The effect of experimental conditions on the extraction, such as pH, stirring rate, sample volume, and extraction time were optimized. Under the optimal conditions, the performance of the proposed method was investigated for the determination of Pb (II) in food and water samples. The method was linear in the range of 0.6-3000 mu g mL(-1). The relative standard deviations and relative recovery of Pb (II) was 4.9% and 99.3%, respectively (n = 5). (C) 2016 Elsevier Ltd. All rights reserved.
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