Journal
ANALYTICA CHIMICA ACTA
Volume 639, Issue 1-2, Pages 51-56Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2009.02.050
Keywords
Chitosan resin; Histidine; Silver determination; Pretreatment system; Inductively coupled plasma-atomic emission spectrometry
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Funding
- Japan Society for Promotion of Science (JSPS) [19350038]
- Grants-in-Aid for Scientific Research [19350038] Funding Source: KAKEN
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A novel chitosan resin, cross-linked chitosan functionalized with histidine moiety (histidine-type chitosan resin), was synthesized for the collection and concentration of trace silver in aquatic samples. A triplet automated-pretreatment system (Triplet Auto-Pret System) installed mini-columns packed with the synthesized histidine-type chitosan resin was coupled with an inductively coupled plasma-atomic emission spectrometry (ICP-AES) for a rapid and sensitive analysis. Adsorption behavior of 50 elements on the histidine-type chitosan resin was examined. A trace amount of Ag(I) was shown a good adsorption in wide pH regions (pH 5-9), and Ag(I) adsorbed was readily recovered with I M nitric acid solution. The limit of detection (3 sigma) for silver was 0.03 mu g L-1. The system was successfully applied to river water and dipped water in silver coated container. (C) 2009 Published by Elsevier B.V.
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