Email updates

Keep up to date with the latest news and content from Journal of Environmental Health Science and Engineering and BioMed Central.

Open Access Highly Accessed Research article

Development of a passive doas system to retrieve atmospheric pollution columns in the 200 to 355 nm region

Rubén Galicia Mejía1*, JoséManueldelaRosa Vázquez1, Suren Stolik Isakina1, Edgard Moreno García1 and Gustavo Sosa Iglesias2

Author Affiliations

1 SEPI-ESIME-Z. Instituto Politécnico Nacional, Av. IPN S/N, UPALM Edif Z, 3er piso cp., 07738, México, D.F., México

2 Dirección de Investigación y Posgrado. Instituto Mexicano del Petroleo, Eje Cenetral Lázaro Cárdenas, México, D.F., México

For all author emails, please log on.

Iranian Journal of Environmental Health Science & Engineering 2013, 10:8  doi:10.1186/1735-2746-10-8

Published: 8 January 2013

Abstract

In recent years several techniques have been developed to measure and monitor the pollution of the air. Among these techniques, remote sensing using optical methods stands out due to several advantages for air quality control applications. A Passive Differential Optical Absorption Spectroscopy system that uses the ultraviolet region from 200 to 355 nm of the solar radiation is presented. The developed system is portable; therefore it is practical for real time and in situ measurements. The enhanced wavelength range of the system is intended to detect the ultraviolet light penetration in the Mexican Valley considering the solar zenith angle and the altitude. The system was applied to retrieve atmospheric SO2 columns emitted either by anthropogenic (power plant) or natural sources (volcano), reaching a detection limit of about 1 ppm. The measurement of the penetrating solar radiation on the earth surface at the UVC range is presented and the possibility to measure pollution traces of some contaminants as O3, NO2 and aromatic compounds in real time and in situ in the ultraviolet region is discussed.

Keywords:
Spectroscopy; Pollution; Sulfur dioxide; Ozone; Ultraviolet