Investigation of changes in CO2 concentration in breath of laboratory animals at the metal-oxide nanoparticle inhalation
B.G. Ageev, O.Yu. Nikiforova
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: inhalation, nanoparticle, cobalt ferrite, magnetite, expired air, guinea pig, СО concentration, absorption spectrum, CO laser
Abstract
Fine and nanosize particles of both natural and anthropogenic origin can be present in the atmospheric air and affect the environment and human health. The effect of inhalation the cobalt ferrite CoFe2O4, magnetite Fe3O4, and tin dioxide SnO2 nanopowders on the carbon dioxide content in air samples taken from the noses of laboratory animals is studied. The CO2 concentration is determined from the absorption spectra of air samples recorded with a laser photoacoustic (PA) gas analyzer. It is ascertained that inhalation of magnetite nanoparticles leads to a decrease in the concentration of carbon dioxide in the samples of exhaled air of laboratory animals, which can indicate a negative effect of such exposure.
|
