Kinetics of gas-phase tropospheric reactions of organic solvents and hydroxyl radical by laser photolysis laser-induced fluorescence

Michael Kompitsas; A. Mellouki; Georges Le Bras; F. Roubani-Kalantzopoulou; A. Mavropoulos; I. Bassiotis

doi:10.1117/12.316598

14 July 1998 Kinetics of gas-phase tropospheric reactions of organic solvents and hydroxyl radical by laser photolysis laser-induced fluorescence

Michael Kompitsas, A. Mellouki, Georges Le Bras, F. Roubani-Kalantzopoulou, A. Mavropoulos, I. Bassiotis

Author Affiliations +

Proceedings Volume 3423, Second GR-I International Conference on New Laser Technologies and Applications; (1998) https://doi.org/10.1117/12.316598
Event: Second GR-I International Conference on New Laser Technologies and Applications, 1997, Olympia, Greece

Abstract

Hydroxyl gas-phase reactions play a very important role in air pollution. For the majority of chemical compounds of the atmosphere, the reaction with OH radical s is an intermediate one, part of a long chain reaction. A laser photolysis-laser induced fluorescence technique has been sued to study OH reaction kinetics with dioxane. The apparatus consists of two synchronized pulsed laser systems, a six cross flow/steady gas reactor, a photomultiplier for LIF detection and control electronics. The first laser is used for the production of OH radicals by photolysis. The second laser provides a probe-beam which excites the OH radical electronically. Then, the relative population of OH radicals is monitored time-resolved by laser induced fluorescence. All experiments are performed under pseudo- first order kinetic conditions. The major advantages of this technique are: (1) Capability to measure OH reaction kinetics over an extended temperature range, with different reactants using the same apparatus. (2) Generation of a clean source of OH radicals. (3) Capability of atmospheric pressure measurements. (4) Micro-scale simulation of atmospheric reactions.

Citation Download Citation

Michael Kompitsas, A. Mellouki, Georges Le Bras, F. Roubani-Kalantzopoulou, A. Mavropoulos, and I. Bassiotis "Kinetics of gas-phase tropospheric reactions of organic solvents and hydroxyl radical by laser photolysis laser-induced fluorescence", Proc. SPIE 3423, Second GR-I International Conference on New Laser Technologies and Applications, (14 July 1998); https://doi.org/10.1117/12.316598

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Photolysis

Laser induced fluorescence

Atmospheric physics

Atmospheric chemistry

Luminescence

NOx

Chemical species

Show All Keywords

Keywords/Phrases

Search In:

Publication Years