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Journal ArticleDOI

Nitrate-induced photooxidation of trace organic chemicals in water.

Richard G. Zepp, +2 more
- 01 May 1987 - 
- Vol. 21, Iss: 5, pp 443-450
TLDR
The oxidation kinetics of butyl chloride, nitrobenzene, anisole, and methylmercury in the presence of hydroxyl radical (OH) scavengers were used to determine the rate and quantum efficiency for production of OH from irradiated nitrate ions in water.
Abstract
The oxidation kinetics of butyl chloride, nitrobenzene, anisole, and methylmercury in the presence of hydroxyl radical (OH) scavengers were used to determine the rate and quantum efficiency for production of OH from irradiated nitrate ions in water. The experiments were conducted under steady-state irradiations with monochromatic radiation (313 nm) and with sunlight. The mean quantum efficiency for OH production at 313 nm rises from 0.013 +/- 0.002 at 20 /sup 0/C to 0.017 +/- 0.003 at 30 /sup 0/C in the pH range 6.2-8.2. Results of this study are used to estimate nitrate-induced photooxidation rates of trace organic chemicals under a variety of environmental conditions. 27 references, 6 figures, 2 tables.

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Journal ArticleDOI

Enhanced photoreactivity of amine-functionalized carbon nanotubes under sunlight in the aquatic environment.

TL;DR: The results indicate an enhanced photoreactivity of CNTs with amine functional groups resulting from a greater excited triplet state formation and a restored electronic structure after the secondary functionalization.
Journal ArticleDOI

Ferrioxalate-assisted Solar Photo-Fenton Degradation of Reactive Dyes in the Presence of Inorganic Salts

TL;DR: In this article, two inorganic salts including sodium chloride and sodium sulfate were used for investigating their effects on the photocatalytic decomposition of three reactive dyes including C. I. Reactive Red 195, C.I Reactive Blue 222, and C.
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Factors affecting the mixed-layer concentrations of singlet oxygen in sunlit lakes

TL;DR: In this paper, the authors identified the environmental and physical factors that have the largest impact on [1O2]SS within lake epilimnia and found that the depth of the epili-nion has the largest effect on the average of the [ 1O2]-SS values, with a factor of 8.8 decrease in the average values when epilimation depth increases from 2 m to 20 m.
Journal ArticleDOI

Photosensitized production of hydrogen peroxide in the aqueous system containing dissolved organic carbon

TL;DR: In this paper, aqueous solutions containing dissolved organic carbon (DOC) were irradiated with UV light (>290 nm), and the generation of H2O2 at the μM level was observed.
Journal ArticleDOI

Homogeneous and heterogeneous photolysis of nitrate in the atmosphere: state of the science, current research needs, and future prospects

TL;DR: In this article , a review summarizes recent advances in the fundamental understanding of the photolysis of nitrate/HNO 3 under various atmospheric conditions, with a focus on mechanisms and key factors affecting the process.
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