Vol. 26, issue 09, article # 6

Abstract:

The adsorption and photosorption properties of precipitated aerosol produced by dispersing mineral magnesite crystal, MgCO₃, under ambient air were investigated. Analysis are carried out of the texture of precipitated aerosols sample, the crystal structure and the adsorption layer composition of micro particles formed by grinding of crystal under ambient air. The kinetics of desorption and photodesorption of CO₂ from micro particle surfaces and the interaction of Freon 22 (CHF₂Cl), CO, O₂, and N₂O with its surfaces under darkness and illumination were studied. The quantum yields and their spectral dependencies for CO₂ photodesorption and O₂ photoadsorption were determined. It is shown that magnesite mineral aerosol is active under illumination for removal of oxygen containing electron-acceptor gases from Earth's atmosphere.

Keywords:

magnesite mineral crystal, dispersion under ambient air, photoadsorption, quantum efficiency, tropospheric conditions

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