Ice Nuclei from Direct Reaction of Iodine Vapor with Vapors from Leaded Gasoline

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Science  10 Nov 1967:
Vol. 158, Issue 3802, pp. 800
DOI: 10.1126/science.158.3802.800


Large numbers of ice nuclei, active at -15°C or colder, can be generated by mixing vapors from leaded gasoline with iodine vapor. This reaction will produce 106 Aitken nuclei per cubic centimeter in a closed system with a volume of 2 liters. When unleaded gasoline is substituted, no nuclei of either type are detectable.