Publication:
Evaluation of a novel PTFE material for use as a means for separation and preconcentration of trace levels of metal ions in sequential injection (SI) and sequential injection lab-on-valve (SI-LOV) systems: Determination of cadmium(II) with detection by electrothermal atomic absorption spectrometry (ETAAS)

1

Issued Date

2004-10-11

Resource Type

Article

ISSN

00032670

DOI

10.1016/j.aca.2004.07.025

Other identifier(s)

2-s2.0-4544330176

Rights

Mahidol University

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SCOPUS

Bibliographic Citation

Analytica Chimica Acta. Vol.523, No.2 (2004), 279-286

Suggested Citation

Xiangbao Long, Roongrat Chomchoei, Piotr Gała, Elo Harald Hansen Evaluation of a novel PTFE material for use as a means for separation and preconcentration of trace levels of metal ions in sequential injection (SI) and sequential injection lab-on-valve (SI-LOV) systems: Determination of cadmium(II) with detection by electrothermal atomic absorption spectrometry (ETAAS). Analytica Chimica Acta. Vol.523, No.2 (2004), 279-286. doi:10.1016/j.aca.2004.07.025 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/21142

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Title

Evaluation of a novel PTFE material for use as a means for separation and preconcentration of trace levels of metal ions in sequential injection (SI) and sequential injection lab-on-valve (SI-LOV) systems: Determination of cadmium(II) with detection by electrothermal atomic absorption spectrometry (ETAAS)

Author(s)

Xiangbao Long
 Roongrat Chomchoei
 Piotr Gała
 Elo Harald Hansen

Other Contributor(s)

Danmarks Tekniske Universitet
 Mahidol University
 Politechnika Poznanska

Abstract

The operational characteristics of a novel poly(tetrafluoroethylene) (PTFE) bead material, granular Algoflon®, used for separation and preconcentration of metal ions via adsorption of on-line generated non-charged metal complexes, were evaluated in a sequential injection (SI) system furnished with an external packed column and in a sequential injection lab-on-valve (SI-LOV) system. Employed for the determination of cadmium(II), complexed with diethyldithiophosphate (DDPA), and detection by electrothermal atomic absorption spectrometry (ETAAS), its performance was compared to that of a previously used material, Aldrich PTFE, which had demonstrated that PTFE was the most promising for solid-state pretreatments. By comparing the two materials, the Algoflon® beads exhibited much higher sensitivity (1.6107 μg l-1versus 0.2956 μg l-1per integrated absorbance (s)), and better retention efficiency (82% versus 74%) and enrichment factor (20.8 versus 17.2), although a slightly smaller linear dynamic range (0.05-0.25 μg l-1versus 0.05-1.00 μg l-1). Moreover, no flow resistance was encountered under the experimental conditions used. The results obtained on three standard reference materials were in good agreement with the certified values. © 2004 Elsevier B.V. All rights reserved.

Keyword(s)

Biochemistry, Genetics and Molecular Biology
 Chemistry
 Environmental Science

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URI

https://repository.li.mahidol.ac.th/handle/123456789/21142

Collections

Scopus 2001-2005