Formation and decomposition of trialkyllead compounds in the atmosphere
The kinetics and mechanisms of the homogeneous reactions of tetramethyllead (TML) and tetraethyllead (TEL) with hydroxyl (HO) have been studied. A suite of lead products were found, including ionic trialkyllead (TriAL) and dialkyllead (DiAL) compounds and inorganic Pb. The ionic alkyllead products were found both in the gas phase and in the aerosol, as well as on the reaction chamber walls. The decomposition reactions of TML, TEL, and the ionic trimethyllead and triethyllead salts were found to proceed with pseudo-first-order kinetics, with the ionic TriAL compounds being about 3 times less reactive with HO than the corresponding tetraalkyllead (TAL) compounds. the ionic TriAL compounds are therefore quite persistent in the atmosphere, ionic TriML having a global mean half-life of about 5 days. The observed occurrence of ionic alkyllead compounds in the atmosphere is therefore explicable in terms of their atmospheric chemistry. 20 references, 5 figures, 4 tables.
- Research Organization:
- Univ. of Lancaster, England
- OSTI ID:
- 7109906
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 20:8; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Atmospheric concentrations and chemistry of alkyllead compounds and environmental alkylation of lead
Atmospheric speciation and wet deposition of alkyllead compounds
Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ATMOSPHERIC CHEMISTRY
AUTOMOBILES
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
EXHAUST GASES
EXPERIMENTAL DATA
FLUIDS
GASEOUS WASTES
GASES
INFORMATION
LEAD COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
POLLUTION
SMOG
SYNTHESIS
TEL
VEHICLES
WASTES