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ID 47030
file
creator
Takedoi, Hiroshi
Yamaji, Shuhei
Ohta, Keiichi
NDC
Chemistry
abstract
The photochemical formation rates of hydroxyl radicals (OH radicals) in river water and seawater were determined by a simple, rapid and sensitive benzene probe method, in which phenol formed by the reaction between benzene and photochemically-generated OH radicals was analyzed by on-line preconcentration HPLC. The OH radical formation rates from well-known OH radical sources, such as nitrate, nitrite and hydrogen peroxide, were in good agreement with those reported previously. River water samples containing high concentrations of nitrate and nitrite were found to show high OH radical formation rates. Ten to 80% of the OH radical formation in river water and seawater was due to the photolysis of nitrate and nitrite, but OH radical formation from hydrogen peroxide was negligible. The OH radical formation from unknown sources other than nitrate, nitrite and hydrogen peroxide was strongly correlated to the amount of fluorescent matter.
description
This work was supported partially by Grant-in-Aid for Scientific Research No.13574016 from the Ministry of Education, Cultutre, Sports, Science and Technology, Japan.
journal title
Analytical Sciences
volume
Volume 20
issue
Issue 1
start page
153
end page
158
date of issued
2004-01
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
2004 © The Japan Society for Analytical Chemistry
relation url
department
Graduate School of Biosphere Science