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ID 47033
file
creator
Katoh, Shinya
Nakatani, Nobutake
NDC
Chemistry
abstract
The aim of this research was to develop a simple procedure for a highly sensitive determination of low-molecular-weight (LMW) carbonyl compounds in drinking water and natural water. We employed a preconcentration HPLC system with 2,4-dinitrophenylhydrazine (DNPH) for the determination of LMW carbonyl compounds. A C-18 reverse-phase preconcentration column was used instead of a sample loop at the sample injection valve. A 0.1 - 5.0 mL portion of the derivatized sample solution was injected with a gas-tight syringe, and a 15% acetonitrile aqueous solution was pushed through the preconcentration column to remove the unreacted excess DNPH, which caused serious interference in the determination of formaldehyde. The detection limits were 1 - 3 nM with a relative standard deviation of 2 - 5% for 20 nM standard solutions (n = 5). The calibration curves were essentially unaffected by coexisting sea salts. Applications to commercial mineral water, tap water, river water, pond water and seawater are presented.
description
This work was partially supported by a Grant-in-Aid for Scientific Research No. 15510002 from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
journal title
Analytical Sciences
volume
Volume 22
issue
Issue 12
start page
1509
end page
1514
date of issued
2006-12
publisher
The Japan Society for Analytical Chemistry
issn
0910-6340
1348-2246
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
2006 © The Japan Society for Analytical Chemistry
relation url
department
Graduate School of Biosphere Science



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