NUCLEATION LABORATORY

PHOTO-INDUCED NUCLEATION OF CARBON DISULFIDE

J. Phys. CHEM. A 101 , 9309 (1997)

 Honghai He and Richard H. Heist

RESEARCH SUMMARY

      Photoinduced nucleation (PIN) experiments using CS₂ and CS₂/ethanol vapors have been carried out in a flow photochemical reactor.  Following ultraviolet irradiation of the CS₂ containing vapors, photoinduced nucleated particles were captured and characterized using mass spectrometry and Raman spectroscopy.  Results of the analysis confirm the presence of S₈ molecules in the particles produced by PIN of CS₂ vapor.  Additional results consistent with these data but involving PIN of CS₂ in supersaturated 1-propanol also from this laboratory are reviewed.  The role of sulfur in the PIN mechanism is discussed in the context of these particle characterization results and the gas phase photochemistry of CS₂ and shown to be consistent with an earlier description of CS₂ PIN from this laboratory (J. Chem. Phys. 83, 3668 (1985)).

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