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 S-8 molecules in the particles produced by PIN of CS2 vapor. Additional results consistent with these data but involving PIN of CS2 in supersaturated I-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 is shown to be consistent with an earlier description of CS2 PIN from this laboratory.