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ID 33031
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Author
Li, Qiong
Oshima, Mitsuko
Motomizu, Shoji
Abstract

A novel fluorophotometric method for formaldehyde determination in environmental waters was developed: the method does not require any enrichment procedures. A flow-injection analysis method for the spectrofluorometric determination of formaldehyde in waters, which is based on the reaction of formaldehyde with acetoacetanilide and ammonia, is proposed. The proposed method shows a good linearity from 0.50 to 40 x 10(-7) M, and the limit of detection (LOD) of 3 x 10(-9) M (0.09 ppb) is achievable. The sample throughput is 15 h(-1). One of the main advantages in the proposed method is that the reaction can be carried out at room temperature without any heating system. The effect of various interferences possibly present in the real water samples was investigated. Most cations and anions, as well as organic compounds, do not interfere with the determination of formaldehyde in environmental water samples. The proposed method is very simple, rapid, less expensive, and highly sensitive, and can be applied to the environmental water samples, such as rain, tap water and river water, at low concentration levels without any enrichment procedure.

Keywords
Spectrofluorometric
Water samples
Flow-injection
Formaldehyde determination
Acetoacetanilide
Note
Published with permission from the copyright holder.
This is a author's copy,as published in TALANTA , 2007 Vol.72 Issue.5 pp.1675-1680
Publisher URL: http://dx.doi.org/10.1016/j.talanta.2007.01.054
Direct access to Thomson Web of Science record14
© 2007 Elsevier B.V.
Published Date
2007-02-01
Publication Title
Talanta
Volume
volume72
Issue
issue5
Start Page
1675
End Page
1680
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Sience KeyUT
Submission Path
analytical_chemistry/16