Abstract
Under UV light irradiation at 313 nm, a gaseous mixture of cobalt tricarbonyl nitrosyl (Co(CO)3NO) and carbon disulfide (CS2) produced sedimentary aerosol particles involving organometal compounds. From measurements of monitor (He-Ne laser) light intensity scattered by the aerosol particles and FT-IR band intensity change of the gaseous molecules, it was shown that the nucleation process of the aerosol particles was accelerated with increasing partial pressure of CS2. Chemical structure of the sedimentary particles was analyzed by FT-IR and X-ray photoelectron spectra (XPS). The results showed that excited Co(CO)3NO molecules reacted with CS2 molecules to initiate the nucleation reaction of particle formation and NO group in Co(CO)3NO was removed during the particle formation. With the application of a magnetic field, CS2 molecules were found to be incorporated into the aerosol particles in a greater amount. Chemical reactions between Co(CO)3NO and CS2 that were responsive to the magnetic field were briefly discussed.
