Author/Authors :
Mej?a، Rubén Galicia نويسنده 1SEPI-ESIME-Z. Instituto Politécnico Nacional, Av. IPN S/N, UPALM Edif Z, 3er piso cp., 07738, México, D.F., México , , V?zquez، José Manuel de la Rosa نويسنده 1SEPI-ESIME-Z. Instituto Politécnico Nacional, Av. IPN S/N, UPALM Edif Z, 3er piso cp., 07738, México, D.F., México , , Isakina، Suren Stolik نويسنده 1SEPI-ESIME-Z. Instituto Politécnico Nacional, Av. IPN S/N, UPALM Edif Z, 3er piso cp., 07738, México, D.F., México , , Garc?a، Edgard Moreno نويسنده 1SEPI-ESIME-Z. Instituto Politécnico Nacional, Av. IPN S/N, UPALM Edif Z, 3er piso cp., 07738, México, D.F., México , , Iglesias، Gustavo Sosa نويسنده Direcci?n de Investigaci?n y Posgrado. Instituto Mexicano del Petroleo, Eje Cenetral L?zaro C?rdenas, México, D.F., México ,
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.
