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Chemical stability of (99m)Tc-DTPA under aerobic and microbially mediated Fe(III)-reducing conditions in porous media.
Slowey, Aaron J; Vandehey, Nicholas T; O'Neil, James P; Boutchko, Rostyslav; Moses, William W; Nico, Peter S.
Affiliation
  • Slowey AJ; Geochemistry Department, Earth Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94207, United States.
  • Vandehey NT; Department of Radiotracer Development & Imaging Technology, Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States.
  • O'Neil JP; Department of Radiotracer Development & Imaging Technology, Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States.
  • Boutchko R; Department of Radiotracer Development & Imaging Technology, Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States.
  • Moses WW; Department of Radiotracer Development & Imaging Technology, Life Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States.
  • Nico PS; Geochemistry Department, Earth Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94207, United States. Electronic address: psnico@lbl.gov.
Appl Radiat Isot ; 94: 175-181, 2014 Dec.
Article in En | MEDLINE | ID: mdl-25213084
ABSTRACT
(99m)Tc-DTPA has been used as a conservative tracer to quantify water transport through porous media. However, more information on the reactivity of this (99m)Tc compound under varying geochemical conditions is desirable to better understand its potential uses. We measured the speciation of Tc following amendment of (99m)Tc-DTPA to batch systems spanning a range of controlled biogeochemical conditions. Our results suggest that (99m)Tc-DTPA is stable under the reducing conditions tested. However, freshly precipitated Al-ferrihydrite may displace Tc(IV) from DTPA in the absence of Fe(III)-reducing conditions.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Groundwater / Technetium Tc 99m Pentetate / Shewanella putrefaciens / Iron Language: En Journal: Appl Radiat Isot Journal subject: MEDICINA NUCLEAR / SAUDE AMBIENTAL Year: 2014 Document type: Article Affiliation country: United States
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Groundwater / Technetium Tc 99m Pentetate / Shewanella putrefaciens / Iron Language: En Journal: Appl Radiat Isot Journal subject: MEDICINA NUCLEAR / SAUDE AMBIENTAL Year: 2014 Document type: Article Affiliation country: United States