Aqueous-phase photochemical formation of hydroxyl radical in authentic cloudwaters and fogwaters
Article Abstract:
Research designed to characterise the aqueous-phase photochemical formation of hydroxyl radical in authentic cloudwater and fogwater samples showed that aqueous-phase photochemical reactions play an important role in the hydroxyl radical content of cloud and fog drops. The extensive formation of hydroxyl radical in fogs and clouds as a result of aqueous-phase photochemical reactions will in turn have a considerable impact on the atmospheric chemical cycles of sulfur, peroxides, chlorine and carbon. This is the first time that hydroxyl radical photoformation has been documented in any authentic condensed stage of the atmosphere.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
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Aromatic carbonyl compounds as aqueous-phase photochemical sources of hydrogen peroxide in acidic sulfate aerosols, fogs, and clouds. 1. Non-phenolic methoxybenzaldehydes and methoxyacetophenones with reductants
Article Abstract:
Understanding the mechanisms and rates of atmospheric aqueous-phase hydrogen peroxide formation is important in the study of atmospheric processes including the formation of sulfuric acids and the oxidation of aqueous organic compounds. Atmospheric aqueous-phase hydrogen peroxides are formed by by photochemical reactions in aqueous solutions containing a non-phenolic aromatic carbonyl and a given phenol. The reaction also destroys the phenol, but causes little or no destruction of the carbonyl.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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Experimental determination of molar absorptivities and quantum yields for individual complexes of a labile metal in dilute solution
Article Abstract:
The effects of metal complexes on the environment are determined by their structure. The effects of metal-complex stoichiometry are different from the effects of ligand structure. The differences are identified thru experimental procedures that determine the molar absorptivities and quantum yields of individual components of given metal complexes. Procedures and mathematical models to determine molar absorptivities and quantum yields for complexes of a labile metal in solution are presented.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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