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ID 33015
フルテキストURL
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著者
Li, Qiong Department of Chemistry, Faculty of Science, Okayama University
Sritharathikhun, Piyanete Department of Chemistry, Faculty of Science, Okayama University
Motomizu, Shoji Department of Chemistry, Faculty of Science, Okayama University
抄録

A novel reagent, acetoacetanilide (AAA), was introduced to the determination of formaldehyde based on Hantzsch reaction. A simple and highly sensitive fluorometric method was achieved by using AAA. The main advantages in the use of this reagent are: the reaction is carried out at room temperature without any heating system, the cyclization product based on Hantzsch reaction is soluble in water, and the product can be detected by spectrophotometry and fluorometry. The maximum absorption wavelength of the product occurs at 368 nm, and the maximum excitation and emission wavelengths are found at 370 and 470 nm, respectively. Several important experimental variables of the procedures were examined; particularly, the reaction temperature, reaction time, concentrations of reagents, and pH of the reagent solution were optimized for improving the detecting sensitivity. The calibration graph was linear in the range of 1 x 10(-7) -1 X 10(-6) M or much higher concentrations. The limit of detection (LOD), based on three times of the standard deviation of the reagent blank, was 2.0 x 10(-8) M. The proposed method was applied to the determination of formaldehyde in environmental water samples. Many foreign species commonly existing in water samples did not interfere with the determination of formaldehyde in the proposed method.

備考
Published with permission from the copyright holder.
This is published in Analytical Sciences, 2007 Vol.23 Issue.4 pp.413-417
Publisher URL: http://dx.doi.org/10.2116/analsci.23.413
Direct access to Thomson Web of Science record
(C)2007 by The Japan Society for Analytical Chemistry
発行日
2007-04-10
出版物タイトル
Analytical Sciences
23巻
4号
開始ページ
413
終了ページ
417
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/51