Measurement of Glyoxal by Laser-Induced Fluorescence and Cavity-Ringdown Spectroscopy
Abstract
The development of an instrument using Cavity-Ringdown and Laser-Induced Fluorescence Spectroscopy for the detection of glyoxal in ambient air is presented. The instrument samples air at reduced pressure in both a White cell and Cavity-Ringdown cell and operates at kHz pulse repetition frequencies. We will present instrument sensitivity and discuss chemical interferences from other species such as NO2. The instrument has a fast time response and thus can provide good spatial and temporal resolution of measurements. The instrument is intended for use in laboratory studies of mechanisms of glyoxal uptake and field studies of fast VOC photochemistry and SOA formation.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2006
- Bibcode:
- 2006AGUFM.A53B0201K
- Keywords:
-
- 0305 Aerosols and particles (0345;
- 4801;
- 4906);
- 0345 Pollution: urban and regional (0305;
- 0478;
- 4251);
- 0365 Troposphere: composition and chemistry;
- 0394 Instruments and techniques