| 8670412 |
Colman JJ, Xu X, Thiemens MH, Trogler WC: Photopolymerization and Mass-Independent Sulfur Isotope Fractionations in Carbon Disulfide. G Ital Med Lav. 1984 May-Jul;6(3-4):135-7.
Irradiation of gaseous carbon disulfide [CS2 (g)] at 313 nanometers produces a dark brown aerosol of (CS2) x. Its thermal decomposition products include disulfur (S2), carbon monosulfide (CS), and (CS) x. The photopolymerization process is accompanied by a large mass-independent isotopic fractionation of sulfur (a 5 to 10 per mil sulfur-33 excess and a 61 to 84 per mil sulfur-36 deficit). Excess sulfur-33 has been observed in several classes of meteorites. Photochemical production of (CS2) x may be important in the origin and evolution of cosmochemical environments such as the presolar nebula, meteorites, asteroids, and planetary atmospheres. |
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