Article pubs.acs.org/est
Temporal Variation of Iodine Concentration and Speciation (127I and 129 I) in Wetland Groundwater from the Savannah River Site, USA Saijin Zhang,*,† Yi-Fang Ho,† Danielle Creeley,† Kimberly A. Roberts,‡ Chen Xu,† Hsiu-Ping Li,† Kathleen A. Schwehr,† Daniel I. Kaplan,‡ Chris M. Yeager,§ and Peter H. Santschi† †
Laboratory for Oceanographic and Environmental Research, Department of Marine Sciences, Texas A&M University, Building 3029, 200 Seawolf Parkway, Galveston, Texas 77554, United States ‡ Savannah River National Laboratory, Aiken, South Carolina 29808, United States § Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States S Supporting Information *
ABSTRACT: 129I derived from a former radionuclide disposal basin located on the Savannah River Site (SRS) has concentrated in a wetland 600 m downstream. To evaluate temporal environmental influences on iodine speciation and mobility in this subtropical wetland environment, groundwater was collected over a three-year period (2010−2012) from a single location. Total 127I and 129I showed significant temporal variations, ranging from 68−196 nM for 127I and
