Journal ArticleDOI
Photochemical production of superoxide and hydrogen peroxide from natural organic matter
Reads0
Chats0
TLDR
In this article, the Suwannee River fulvic acid (SRFA) at pH 8.1 was irradiated with simulated sunlight and showed that superoxide decayed through both uncatalysed disproportionation and an oxidative pathway that did not result in hydrogen peroxide production.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 2011-08-01. It has received 137 citations till now. The article focuses on the topics: Hydrogen peroxide & Superoxide.read more
Citations
More filters
Journal ArticleDOI
Triplet state dissolved organic matter in aquatic photochemistry: reaction mechanisms, substrate scope, and photophysical properties
TL;DR: It is proposed that through the use of appropriate sets of probe compounds and model photosensitizers an improved estimation of the distribution of triplet energies and one-electron reduction potentials of 3CDOM* can be achieved.
Journal ArticleDOI
The importance of charge-transfer interactions in determining chromophoric dissolved organic matter (CDOM) optical and photochemical properties
TL;DR: This review summarizes current understanding of the processes underlying CDOM photophysics and photochemistry as well as their physical basis.
Journal ArticleDOI
Spot the Difference: Engineered and Natural Nanoparticles in the Environment—Release, Behavior, and Fate
TL;DR: It is the aim of this Review to critically compare naturally observed processes with those found for engineered systems to identify the "nanospecific" properties of manufactured particles and describe critical knowledge gaps relevant for the risk assessment of manufactured nanomaterials in the environment.
Journal ArticleDOI
Photochemistry of Dissolved Black Carbon Released from Biochar: Reactive Oxygen Species Generation and Phototransformation.
Heyun Fu,Huiting Liu,Jingdong Mao,Wenying Chu,Qilin Li,Pedro J. J. Alvarez,Xiaolei Qu,Dongqiang Zhu +7 more
TL;DR: Dissolved black carbon released from biochar decreased its ability to further generate ROS due to lower light absorption, which has significant implications on the environmental fate of dissolved BC and that of priority pollutants.
Journal ArticleDOI
Photogeneration of reactive oxygen species from biochar suspension for diethyl phthalate degradation
TL;DR: In this article, the authors investigated the photogeneration of reactive oxygen species (ROS) from biochar suspension by using FTIR, Raman, XPS and electron paramagnetic resonance (EPR) techniques.
References
More filters
Journal ArticleDOI
Smoothing and Differentiation of Data by Simplified Least Squares Procedures.
Journal ArticleDOI
Reactivity of HO[2]/O[2][-] radicals in aqueous solution
TL;DR: In this article, the superoxide radical (HO2⇄O−2 +H+, pK=4.8) in aqueous solution has been critically assessed and the rate constants for reactions of O−2 and HO2 with more than 300 organic and inorganic ions, molecules and other transient species have been tabulated.
Journal ArticleDOI
Fluorescence spectroscopy reveals ubiquitous presence of oxidized and reduced quinones in dissolved organic matter.
Rose M. Cory,Diane M. McKnight +1 more
TL;DR: Results provide new insight into the redox reactivity of DOM and have implications for the application of fluorescence spectroscopy as a tool to characterize DOM.
Journal ArticleDOI
A Stable Nonfluorescent Derivative of Resorufin for the Fluorometric Determination of Trace Hydrogen Peroxide: Applications in Detecting the Activity of Phagocyte NADPH Oxidase and Other Oxidases
TL;DR: The enzymatic determination of hydrogen peroxide can be accomplished with high sensitivity and specificity using N-acetyl-3, 7-dihydroxyphenoxazine (Amplex Red), a highly sensitive and chemically stable fluorogenic probe for the enzymatics determination of H2O2.
Journal ArticleDOI
Rate Constants for the Decay and Reactions of the Lowest Electronically Excited Singlet State of Molecular Oxygen in Solution. An Expanded and Revised Compilation
TL;DR: An expanded and revised compilation on the reactivity of singlet oxygen, the lowest electronically excited singlet state of molecular oxygen, 1O2*(1Δg), in fluid solution is presented in this paper.
Related Papers (5)
Photochemical formation of hydrogen peroxide in surface and ground waters exposed to sunlight.
William J. Cooper,Rod G. Zika +1 more