RETRACTED ARTICLE: Direct quantification of iodine in nuclear wastes using DRC-ICP-MS

Abstract

A method was developed for the direct quantification of iodine in Hanford tank waste using inductively coupled plasma mass spectrometry coupled with a dynamic reaction cell. The following parameters were optimized to lower the 129 m/z background signal and minimize iodine carryover effects: diluent, oxygen gas flow rate, radiofrequency voltage applied to the dynamic reaction cell, and rinse times. The concentration of 129I was 23 ± 1 µg/mL (n = 4, ± 1σ) in the Hanford waste tank 241-AP-107; to our knowledge this work constitutes the first report of iodine concentration in the tank waste.