Vol. 15, issue 11, article # 9
pdf Khmelevtsov S. S., Korshunov V. A., Vdovenkov A. M. DOAS?4R ultraviolet open path gas analyzer. // Atmospheric and oceanic optics. 2002. V. 15. No. 11. P. 907-912.Copy the reference to clipboard
Abstract:
An ultraviolet open path gas analyzer operating in the 200-460 nm wavelength range designed for determining low concentrations of gaseous pollutants in the urban atmosphere based on differential optical absorption spectroscopy (DOAS). The analyzer includes a xenon arc lamp, coaxial telescope, retroreflector, monochromator-spectrograph, and linear diode array as a detector. A personal computer is used for measurement control and data processing. The analyzer's databank contains 31 gaseous components, including such ubiquitous pollutants as sulfur dioxide, nitric oxide, nitrogen dioxide, ozone, formaldehyde, ammonia, and some monocyclic hydrocarbons. Minimum detectable concentrations vary from fractions of ppb to a few ppb. Results of trial measurements in Obninsk are presented.