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ID 33041
フルテキストURL
著者
Sumida, Takashi Industrial Technology Center of Kochi Prefecture
Ikenoue, Tamami Industrial Technology Center of Kochi Prefecture
Hamada, Kazuhide Industrial Technology Center of Kochi Prefecture
Sabarudin, Akhmad 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

On-line preconcentration system for the selective, sensitive and simultaneous determination of chromium species was investigated. Dual minicolumns containing chelating resin were utilized for the speciation and preconcentration of Cr(III) and Cr(VI) in water samples. In this system, Cr(III) was collected on first column packed with iminodiacetate resin. Cr(VI) in the effluent from the first column was reduced to Cr(III), which was collected on the second column packed with iminodiacetate resin. Hydroxyammonium chloride was examined as a potential reducing agent for Cr(VI) to Cr(III). The effects of pH, sample flow rate, column length, and interfering ions on the recoveries of Cr(III) were carefully studied. Five millilitres of a sample solution was introduced into the system. The collected species were then sequentially washed by 1 M ammonium acetate, eluted by 2 M nitric acid and measured by ICP-AES. The detection limit for Cr(III) and Cr(VI) was 0.08 and 0.15 mu g l-1, respectively. The total analysis time was about 9.4 min. The developed method was successfully applied to the speciation of chromium in river, tap water and wastewater samples with satisfied results.

キーワード
speciation
chromium
on-line preconcentration
ICP-AES
chelating resin
備考
Published with permission from the copyright holder.
This is published in Talanta, 2005 Vol.68 Issue.2 pp.388-393
Publisher URL: http://dx.doi.org/10.1016/j.talanta.2005.08.064
Direct access to Thomson Web of Science record
(C)2005 by Elsevier B.V.
発行日
2005-10-13
出版物タイトル
Talanta
68巻
2号
開始ページ
388
終了ページ
393
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/44