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Structure‐Activity relationships for photooxidation processes in the environment
Author(s) -
Mill Theodore
Publication year - 1989
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620080105
Subject(s) - reaction rate constant , chemistry , photochemistry , singlet oxygen , radical , reactivity (psychology) , electron transfer , ozone , reaction rate , oxygen , environmental chemistry , kinetics , organic chemistry , catalysis , medicine , physics , alternative medicine , pathology , quantum mechanics
Photooxidation of organic compounds takes place by direct and indirect photoprocesses. Generally, direct photooxidation rate constants cannot be predicted by currently available structure‐activity relationships (SARs). Indirect photooxidation processes, in which photogenerated oxidants react with chemicals by electron or H‐atom transfer or addition to unsaturated centers, are well understood and rate constants are strongly correlated with structure. This article reviews SARs for predicting rate constants for reactions of HO radical and ozone in the troposphere, and RO n radicals and singlet oxygen in water for reactive organic compounds, and discusses the identification, measurement and reactivity of these oxidants.