Study of the adsorption behavior of heavy metal ions on nanometer-size titanium dioxide with ICP-AES

A new method using nanoparticle TiO2 as solid-phase extractant coupled with ICP-AES was proposed for simultaneous determination of trace elements. The adsorption behavior of nanometer TiO2 towards Cu, Cr, Mn and Ni was investigated by ICP-AES, and the adsorption pH curves, adsorption isotherms and a...

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Published inFresenius' journal of analytical chemistry Vol. 368; no. 6; pp. 638 - 640
Main Authors Liang, P, Qin, Y, Hu, B, Li, C, Peng, T, Jiang, Z
Format Conference Proceeding Journal Article
LanguageEnglish
Published Berlin Springer 01.11.2000
Subjects
Analytical chemistry
Chemistry
Exact sciences and technology
Spectrometric and optical methods
Trace analysis
Interelement effect
Adsorption isotherm
Metal ion
Inductive coupling plasma spectrometry
Chemical enrichment
Heavy metal
Emission spectrometry
Adsorption
Simultaneous measurement
pH
Titanium oxide
Nanostructured materials
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Summary:A new method using nanoparticle TiO2 as solid-phase extractant coupled with ICP-AES was proposed for simultaneous determination of trace elements. The adsorption behavior of nanometer TiO2 towards Cu, Cr, Mn and Ni was investigated by ICP-AES, and the adsorption pH curves, adsorption isotherms and adsorption capacities were obtained. It was found that the adsorption rates of the metal ions studied were more than 90% in pH 8.0-9.0, and 2.0 mol L-1 HCl was sufficient for complete elution. Nanometer TiO2 possesses a significant capacity for the sorption of the metal ions studied which is higher than the capacity of silica, the commonly used extractant. The method has been applied to the analysis of some environmental samples with satisfactory results.
Bibliography:ObjectType-Article-1
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ISSN:0937-0633
1432-1130
DOI:10.1007/s002160000546