Sources and interrelations of oxidants (peroxides and {sup {center_dot}}OH), iron(II), and organic acids formed from aqueous-phase photochemical reactions in clouds, fogs, and aqueous aerosols
Conference
·
OSTI ID:214634
- Duke Univ., Durham, NC (United States); and others
Based on studies of cloud waters from Whiteface Mountain, New York, the aqueous photoformation of OH is attributed to two different mechanisms. One of these mechanisms involves the direct photolysis of nitrate, and the other mechanism involves an HOOH-Fe(II) photo-Fenton reaction. Separate studies of well-defined aqueous solutions (pH=3.7) of Fe(III)-dicarboxylate complexes, for dicarboxylates commonly found in atmospheric waters (oxalate, malonate, succinate, glutarate), reveals that these complexes rapidly form Fe(II) and HOOH with 313-nm illumination. Finally, studies of the aqueous (pH=3.7) photolysis of biacetyl, which is commonly found in fogs and clouds, produces acetic acid, peroxyacetic acid, HOOH, CH{sub 3}OOH, and pyruvic acid. The peroxylacetyl radical is proposed as a key intermediate; it is the most strongly oxidizing organic peroxyl radical known to date.
- OSTI ID:
- 214634
- Report Number(s):
- CONF-950801--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Aqueous-phase photochemical sources of oxidants (peroxides, peroxyl radicals, hydroxyl radical, and phenoxyl radicals) in aqueous aerosols, fogs, and clouds
Aqueous-phase photoreactions of substituted benzaldehydes and acetophenones as sinks for organic compounds as a source of HOOH in aqueous aerosols, fogs, and clouds: Effects of pH and of ring substituents
AQUEOUS CHEMISTRY OF ZIRCONIUM. PART III. DIALYSED ZIRCONYL CHLORIDE- NEUTRAL SALTS SYSTEMS
Conference
·
Tue Oct 01 00:00:00 EDT 1996
·
OSTI ID:369991
Aqueous-phase photoreactions of substituted benzaldehydes and acetophenones as sinks for organic compounds as a source of HOOH in aqueous aerosols, fogs, and clouds: Effects of pH and of ring substituents
Conference
·
Tue Oct 01 00:00:00 EDT 1996
·
OSTI ID:369998
AQUEOUS CHEMISTRY OF ZIRCONIUM. PART III. DIALYSED ZIRCONYL CHLORIDE- NEUTRAL SALTS SYSTEMS
Journal Article
·
Wed May 01 00:00:00 EDT 1963
· Indian Journal of Chemistry (India) Divided into Indian J. Chem., Sect. A and Indian J. Chem., Sect. B
·
OSTI ID:4638606