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Speciation diagrams were calculated for two different sites along the Fountain Creek in the stream water: (A) The low concentration UF-2 sites with [Se]tot 3.36 × 10−10 M, and (B) LF-4 with [Se]tot 1.22 × 10−7 M. Recently the speciation was determined to around 90% Se(VI) for several of the sites studied in this work [25].
