Arabian Journal of Chemistry, ( ISI ), Volume (9), No (2), Year (2012-7) , Pages (1833-1839)

Title : ( On-line preconcentration of ultra-trace thallium(I) in water samples with titanium dioxide nanoparticles and determination by graphite furnace atomic absorption spectrometry )

Authors: Saeid Asadpour , Mahmod CHamsaz , Mohammad Hassan Entezari , Md Jelas Haron , narjes ghows ,

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A new method has been developed for the determination of Tl(I) based on simultaneous sorption and preconcentration with a microcolumn packed with TiO2 nanoparticle with a high specific surface area prepared by Sonochemical synthesis prior to its determination by graphite furnace atomic absorption spectrometry (GFAAS). The optimum experimental parameters for preconcentration of thallium, such as elution condition, pH, and sample volume and flow rate have been investigated. Tl(I) can be quantitatively retained by TiO2 nanoparticles at pH 9.0, then eluted completely with 1.0 mol L1 HCl. The adsorption capacity of TiO2 nanoparticles for Tl(I) was found to be 25 mg g1. Also detection limit, precision (RSD, n = 8) and enrichment factor for Tl(I) were 87 ng L1, 6.4% and 100, respectively. The method has been applied for the determination of trace amounts of Tl(I) in some environmental water samples with satisfactory results.

Keywords

, Preconcentration, Thallium(I), Titanium dioxide, nanoparticles, Microcolumn separation,
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@article{paperid:1059958,
author = {Asadpour, Saeid and CHamsaz, Mahmod and Entezari, Mohammad Hassan and Md Jelas Haron and Ghows, Narjes},
title = {On-line preconcentration of ultra-trace thallium(I) in water samples with titanium dioxide nanoparticles and determination by graphite furnace atomic absorption spectrometry},
journal = {Arabian Journal of Chemistry},
year = {2012},
volume = {9},
number = {2},
month = {July},
issn = {1878-5352},
pages = {1833--1839},
numpages = {6},
keywords = {Preconcentration; Thallium(I); Titanium dioxide; nanoparticles; Microcolumn separation; GFAAS},
}

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%0 Journal Article
%T On-line preconcentration of ultra-trace thallium(I) in water samples with titanium dioxide nanoparticles and determination by graphite furnace atomic absorption spectrometry
%A Asadpour, Saeid
%A CHamsaz, Mahmod
%A Entezari, Mohammad Hassan
%A Md Jelas Haron
%A Ghows, Narjes
%J Arabian Journal of Chemistry
%@ 1878-5352
%D 2012

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