Integrated Method for the Determination of Iodine Isotopic Ratios Near a Nuclear Facility

摘要

The nuclear industry has long been concerned with the measurement of small amounts of exp 129 I that are released to the environment from reactor operations and fuel reprocessing activities. Recent developments in negative surface ionization technology at the Idaho National Engineering Laboratory have enabled the development of an integrated technique to measure isotopic ratios of iodine in air. Iodine-129 detection limits in the femtogram range have been reached with total sample sizes on the order of 1 nanogram. This report outlines the recent developments in the method and describe a laboratory simulation of environmental measurements. Included in the report are: accuracy and precision data for in-house generated standards, a description of a sampling fractionation study, and a final test of the method in measuring air samples collected at the Idaho Chemical Processing Plant. (ERA citation 09:012715)