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ID 33020
フルテキストURL
著者
Oshita, Koji Department of International Conservation Studies for Cultural Properties, Faculty of Cultural Properties, Kibi International University
Noguchi, Osamu Department of Chemistry, Faculty of Science, Okayama University
大島 光子 Department of Chemistry, Faculty of Science, Okayama University
本水 昌二 Department of Chemistry, Faculty of Science, Okayama University
抄録

A chelating resin, cross-linked chitosan modified with the glycine moiety (glycine-type chitosan resin), was developed for the collection and concentration of bismuth in aquatic samples for ICP-MS measurements. The adsorption behavior of bismuth and 55 elements on glycine-type chitosan resin was systematically examined by passing a sample solution containing 56 elements through a mini-column packed with the resin (wet volume; I ml). After eluting the elements adsorbed on the resin with nitric acid, the eluates were measured by ICP-MS. The glycine-type chitosan resin could adsorb several cations by a chelating mechanism and several oxoanions by an anion-exchange mechanism. Especially, the resin could adsorb almost 100% Bi(III) over a wide pH region from pH 2 to 6. Bismuth could be strongly adsorbed at pH 3, and eluted quantitatively with 10 ml of 3 M nitric acid. A column pretreatment method with the glycine-type chitosan resin was used prior to removal of high concentrations of matrices in a seawater sample and the preconcentration of trace bismuth in river water samples for ICP-MS measurements. The column pretreatment method was also applied to the determination of bismuth in real samples by ICP-MS. The LOD of bismuth was 0.1 pg ml(-1) by 10-fold column preconcentration for ICP-MS measurements. The analytical results for bismuth in sea and river water samples by ICP-MS were 22.9 +/- 0.5 pg ml(-1) (RSD, 2.2%) and 2.08 +/- 0.05 pg ml(-1) (RSD, 2.4%), respectively.

備考
Published with permission from the copyright holder.
This is published in Analytical Sciences, 2007 Vol.23 Issue.10 pp.1203-1208
Publisher URL: http://dx.doi.org/10.2116/analsci.23.1203
Direct access to Thomson Web of Science record
(C)2007 by The Japan Society for Analytical Chemistry
発行日
2007-10-10
出版物タイトル
Analytical Sciences
23巻
10号
開始ページ
1203
終了ページ
1208
資料タイプ
学術雑誌論文
言語
English
査読
有り
DOI
Web of Sience KeyUT
Submission Path
analytical_chemistry/50