Contribution of the Photo-Fenton Reaction to Hydroxyl Radical Formation Rates in River and Rain Water Samples
Analytical Sciences Volume 23 Issue 9
Page 1137-1142
published_at 2007-09
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Title ( eng ) |
Contribution of the Photo-Fenton Reaction to Hydroxyl Radical Formation Rates in River and Rain Water Samples
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Creator |
Nakatani Nobutake
Ueda Marina
Shindo Hirotaka
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Source Title |
Analytical Sciences
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Volume | 23 |
Issue | 9 |
Start Page | 1137 |
End Page | 1142 |
Abstract |
The hydroxyl radical (OH radical) formation rates from the photo-Fenton reaction in river and rain water samples were determined by using deferoxamine mesylate (DFOM), which makes a stable and strong complex with Fe(III), resulting in a suppression of the photo-Fenton reaction. The difference between the OH radical formation rates with and without added DFOM denotes the rate from the photo-Fenton reaction. The photoformation rates from the photo-Fenton reaction were in the range of 0.7 - 45.8 × 10-12 and 2.7 - 32.3 × 10-12 M s-1 in river and rain water samples, respectively. A strong positive correlation between the OH radical formation rate from the photo-Fenton reaction and the amount of fluorescent matter in river water suggests that fluorescent matter, such as humic substances, plays an important role in the photo-Fenton reaction. In rain water, direct photolysis of hydrogen peroxide was an important source of OH radicals as well as the photo-Fenton reaction. The contributions of the photo-Fenton reaction to the OH radical photoformation rates in river and rain water samples were in the ranges of 2 - 29 and 5 - 38%, respectively. Taking into account the photo-Fenton reaction, 33 - 110 (mean: 80) and 42 - 110 (mean: 84)% of OH radical sources in river and rain water samples, respectively, collected in Hiroshima prefecture were elucidated.
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Descriptions |
This study was supported by the Ministry of Education, Culture, Sports, Science and Technology, Japan by a Grant-in Aid for Scientific Research (No. 18310010).
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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 | 2007-09 |
Rights |
2007 © 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.23.1137
[DOI] https://doi.org/10.2116/analsci.23.1137
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