Abstract
AbstractDilute aqueous fulvic acid (FA) solutions were exposed to UV irradiation for various lengths of time at pH 3.5, 7.0, and 11.0. The rate of photo‐oxidation of FA was pH dependent, increasing with increase in pH.In acid solution most of the FA appeared to be oxidized to CO2 + H2O. Organic S was converted to inorganic sulfate. Under neutral and alkaline conditions, organic C was oxidized to inorganic carbonate. About 90% of the initial FA was decomposed by UV irradiation. Only the most stable components, which were benzenecarboxylic and allphatic n‐fatty acids, resisted decomposition. Phenolic acids, the chromophores responsible for the color of FA, were destroyed.Ultraviolet irradiation could be used as a degradative method if one is interested in isolating and identifying the most stable FA components only.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
