このエントリーをはてなブックマークに追加
ID 33015
FullText URL
Thumnail fulltext.pdf 92.9 KB
Author
Li, Qiong
Sritharathikhun, Piyanete
Motomizu, Shoji
Abstract

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.

Note
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
Published Date
2007-04-10
Publication Title
Analytical Sciences
Volume
volume23
Issue
issue4
Start Page
413
End Page
417
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Science KeyUT
Submission Path
analytical_chemistry/51