Premium
The volatilization of iodine species over dilute iodide solutions
Author(s) -
Evans G. J.,
Mirbod S. M.,
Jervis R. E.
Publication year - 1993
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450710514
Subject(s) - chemistry , iodine , iodide , aqueous solution , nuclear chemistry , inorganic chemistry , organic chemistry
The volatility of iodine above dilute CsI solutions has been investigated experimentally. The partitioning of iodine between air and solutions prepared with iodide was found to increase with decreasing p H and iodide concentration. Aqueous to gaseous partition coefficients ranging from 3 X 10 3 to 10 7 were observed indicating that only a very small fraction of the iodide was oxidized to volatile forms. It was concluded that under these very dilute conditions, the rate of iodide oxidation was proportional to the square root of the iodide concentration; the rate also depended on p H under acidic conditions but not under basic conditions.