Prediction of radiogenic Sr and Pb isotope signatures in plants using diffusive gradients in thin films.

ABSTRACT: This study evaluated the potential of the diffusive gradients in thin films (DGT) technique to assess radiogenic strontium (Sr) and lead (Pb) isotope signatures in bioavailable soil fractions as a proxy for plant uptake. Concentrations (c_DGT) and isotope ratios of Sr (⁸⁷Sr/⁸⁶Sr) and Pb (²⁰⁷Pb/²⁰⁶Pb, ²⁰⁸Pb/²⁰⁶Pb, ²⁰⁶Pb/²⁰⁴Pb) assessed by DGT (TK100, Chelex), along with extractable (NH₄NO₃, NH₄OAc, EDTA) and total Sr and Pb mass fractions and isotope ratios, were compared to those in Lactuca sativa L. (lettuce), Triticum aestivum L. (wheat), and Raphanus sativus L. (radish) grown on five geochemically distinct soils. Relative to conventional soil extraction, DGT

SUBMITTER: Wagner S 

PROVIDER: S-EPMC12909409 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature