Laser-induced photodestruction of the organo-phosphates: DIMP and DMMP

Journal Article · Thu Jan 01 04:00:00 EST 1981 · J. Environ. Sci. Health, Part B; (United States)

DOI:https://doi.org/10.1080/03601238109372262· OSTI ID:5530345

Radziemski, Jr, L J

The infrared and ultraviolet laser-induced photodestruction of diisopropyl methylphosphonate (DIMP) and dimethyl methylphosphonate (DMMP) has been surveyed. We used the excimer lasers ArF (193 nm), KrF (248 nm), XeCl (308 nm), and quadrupled Nd:YAG (266 nm) as well as a pulsed CO/sup 2/ laser. Samples were irradiated in the vapor and liquid phases. Photodissociation was observed at all irradiation wavelengths, being most efficient when ArF irradiated DIMP or DMMP in the vapor phase in the presence of air or oxygen. Pulsed, focused CO/sup 2/ radiation led to multiple photon dissociation and pyrolytic destruction. Light hydrocarbon gases were the principal decomposition products. Hydrogen, CO, CO/sup 2/ and water were also detected. The residual liquid is likely to be a phosphorus-bearing acid.

• OSTI ID: 5530345
• Journal Information: J. Environ. Sci. Health, Part B; (United States), Journal Name: J. Environ. Sci. Health, Part B; (United States) Vol. 16:3; ISSN JPFCD
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON DIOXIDE LASERS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
GAS LASERS
HYDROCARBONS
LASERS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS