Determination of Hydroxyl Radical Photoproduction Rates in Natural Waters
Analytical Sciences Volume 20 Issue 1
Page 153-158
published_at 2004-01
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| File | |
| Title ( eng ) |
Determination of Hydroxyl Radical Photoproduction Rates in Natural Waters
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| Creator |
Takedoi Hiroshi
Yamaji Shuhei
Ohta Keiichi
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| Source Title |
Analytical Sciences
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| Volume | 20 |
| Issue | 1 |
| Start Page | 153 |
| End Page | 158 |
| 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.
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| Descriptions |
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.
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| NDC |
Chemistry [ 430 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
The Japan Society for Analytical Chemistry
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| Date of Issued | 2004-01 |
| Rights |
2004 © The Japan Society for Analytical Chemistry
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0910-6340
[ISSN] 1348-2246
[NCID] AA10500785
[DOI] 10.2116/analsci.20.153
[DOI] https://doi.org/10.2116/analsci.20.153
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