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ID 33022
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Author
Sabarudin, Akhmad
Lenghor, Narong
Oshima, Mitsuko
Hakim, Lukman
Gao, Yun-Hua
Motomizu, Shoji
Abstract

A new chelating resin using chitosan as a base material was synthesized. Functional moiety of 2-amino-5-hydroxy benzoic acid (AHBA) was chemically bonded to the amino group of cross-linked chitosan (CCTS) through the arm of chloromethyloxirane (CCTS-AHBA resin). Several elements, such as Ag, Be, Cd, Co, Cu, Ni, Ph, U, V, and rare earth elements (REEs), could be adsorbed on the resin. To use the resin for on-line pretreatment, the resin was packed in a mini-column and installed into a sequential-injection/automated pretreatment system (Auto-Pret System) coupled with inductively coupled plasma-atomic emission spectrometry (ICP-AES). The sequential-injection/automated pretreatment system was a laboratory-assembled, and the program was written using Visual Basic software. This system can provide easy operation procedures, less reagent consumption, as well as less waste production. Experimental variables considered as effective factors in the improvement sensitivity, such as an eluent concentration, a sample and an eluent flow rate, pH of samples, and air-sandwiched eluent were carefully optimized. The proposed system provides excellent on-line collection efficiency, as well as high concentration factors of analytes in water samples, which results in highly sensitive detection of ultra-trace and trace analysis. Under the optimal conditions, the detection limits of 24 elements examined are in the range from ppt to sub-ppb levels. The proposed method was validated by using the standard reference material of a river water, SLRS-4, and the applicability was further demonstrated to the on-line collection/concentration of trace elements, such as Ag, Be, Cd, Co, Cu, Ni, Ph, U, V, and REEs in water samples.

Keywords
sequential-injection
on-line preconcentration
trace elements
ICP-AES
chitosan resin
Note
Published with permission from the copyright holder.
This is published in Talanta, 2007 Vol.72 Issue.5 pp.1609-1617
Publisher URL: http://dx.doi.org/10.1016/j.talanta.2007.01.024
Direct access to Thomson Web of Science record
(C)2007 by Elsevier B.V.
Published Date
2007-01-18
Publication Title
Talanta
Volume
volume72
Issue
issue5
Start Page
1609
End Page
1617
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Sience KeyUT
Submission Path
analytical_chemistry/36