Long-term ozone consumption by aquatic fulvic acids acting as precursors of radical chain reactions
Article Abstract:
The way in which aquatic fulvic acids consumed ozone was studied, along with the impact of various reaction parameters. The focus was on the way that ozone consumption was affected by radical scavengers so that precursors to radical chain reactions could be identified. The results indicated that relative ozone consumption increased at a greater rate when scavengers were not present. This indicated that radical chain reactions occurred between ozone and fulvic acids. The precursors of the reactions were found to be hydrogen peroxide and glyoxalic acid.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Chlorination and formation of organoiodinated compounds: the important role of ammonia
Article Abstract:
A study investigates the conditions of formation of organoiodinated compounds responsible of medicinal tastes and odors often observed after chlorination of waters containing iodides. Results reveal that ammonia or organic amines contribute in iodorm formation during chlorination of iodides containing waters at amine ratios corresponding to the presence of inorganic or organic chloramines. Nitrogenated molecules such as amines and amino acids, however, have limited role in the production of organoiodinated compounds during chlorination.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Synchronous fluorescence spectra of metal-fulvic acid complexes
Article Abstract:
The binding of dissolved organic matter (DOM) to metal ions in natural waters is an important regulator of metal toxicity, transport and bioavailability. Fluorescence spectroscopy measures the DOM ligand, as opposed to techniques that simply measure metal concentrations. Synchronous quenching spectra of the complexation of divalent transition metal ions by fulvic acid are used to examine binding site heterogeneity and competition between metals for binding sites.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: An approach to compositional trends in Latin America. Cardew as a basis for a discussion on ethical options. The development of electroacoustic music in Columbia, 1965-1999: an introduction
- Abstracts: Strange matters: can advanced accelerators initiate runaway reactions? Vexing vortices: why a magnetic field is the enemy of superconductivity
- Abstracts: Soil-borne mobile colloids as influenced by water flow and organic carbon. Identification and quantification of the "Al13" tridecameric polycation using ferron