Premium
Peroxy Radical Interactions with Soil Constituents
Author(s) -
Pohlman A. A.,
Mill T.
Publication year - 1983
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1983.03615995004700050016x
Subject(s) - radical , chemistry , humic acid , fulvic acid , silicate , aqueous solution , organic chemistry , fertilizer
Abstract Interaction of peroxy (RO 2 · ) radicals with soil constituents in dilute aqueous solutions and suspensions at 50°C was examined using p ‐isopropylphenol (PIP) as a probe. Dissolved and suspended humic substances as well as suspended silicate surfaces were found to trap RO 2 · radicals. Competitive trapping of RO 2 · radicals occurs with 10 mg·L −1 of solid suspended humic acid polymers and by 1.0% silicate suspensions containing 3–74 mg·kg −1 of total organic C. Electron and H‐atom transfer between RO 2 · radicals and solid surfaces is attributed to the availability of electron‐donating or phenolic functional groups and not to total organic C content.