Effects of organic impurities on the partitioning of iodine

Thesis/Dissertation · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5548532

Lutz, J B

For the purposes of iodine source term calculations a knowledge of the time-dependence of iodine partitioning and the composition of the volatile iodine species may be very important. This study demonstrates that the disposition of iodine in a water-air system subjected to gamma radiation can be significantly affected by the presence of organics in the liquid and/or vapor phases. A useful parameter for characterizing the distribution of iodine between the liquid and vapor phases is the time dependent iodine partition coefficient (IPC) defined by: IPC = (Total Iodine Concentration in Liquid Phase)/(Total Iodine Concentration in Vapor Phase). The addition of methanol to a gamma-irradiated water-air-iodine system tends to increase the IPC over that which would be observed in the absence of methanol. This increase in the IPC is attributed to the ability of methanol to inhibit the formation of volatile molecular iodine by scavenging the hydroxyl radicals necessary to initiate molecular iodine formation. In the presence of gamma radiation, gaseous molecular iodine (I{sub 2}) and methane may react to form volatile organic iodides (mainly methyl iodide) which tend to lower the IPC of a system. It is evident that the formation of volatile organic iodide species depends strongly on the specific organic present in the system.

• Research Organization: Virginia Univ., Charlottesville, VA (USA)
• OSTI ID: 5548532
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
IODINE
RADIONUCLIDE MIGRATION
AIR
CALCULATION METHODS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
DISTRIBUTION
GAMMA RADIATION
LIQUIDS
METHANE
METHANOL
ORGANIC COMPOUNDS
ORGANIC IODINE COMPOUNDS
QUANTITY RATIO
SOURCE TERMS
ALCOHOLS
ALKANES
ELECTROMAGNETIC RADIATION
ELEMENTS
ENVIRONMENTAL TRANSPORT
FLUIDS
GASES
HALOGENS
HYDROCARBONS
HYDROXY COMPOUNDS
IONIZING RADIATIONS
MASS TRANSFER
NONMETALS
ORGANIC HALOGEN COMPOUNDS
RADIATIONS
500300* - Environment
Atmospheric- Radioactive Materials Monitoring & Transport- (-1989)
520300 - Environment
Aquatic- Radioactive Materials Monitoring & Transport- (1989)