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Sorption and transport of trenbolone and altrenogest photoproducts in soil–water systems

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Abstract

This study evaluated the sorption and transport potential of seven phototransformation products of 17α-trenbolone, 17β-trenbolone, trendione, and altrenogest, along with the parent trienone steroids in batch and column soil–water systems. In batch systems, the target solutes exhibited linear isotherms, with values for sorption coefficients (log Koc) of parent steroids (2.46–2.76) higher than those for photoproducts (1.92–2.57). In column systems, the estimated retardation factors (Rsol) for parents (2.7–5.1) were ∼2–5 times higher than those for photoproducts (0.84–1.7). The log Koc (R2 = 0.75) and Rsol (R2 = 0.89–0.98) were well correlated with measured log Kow values, indicating that hydrophobic partitioning governed the soil–solute interaction of these biologically potent compounds in soil–water systems. These data indicated that photoproducts exhibited reduced sorption affinity and increased transport potential relative to more hydrophobic parent structures. In agroecosystems, traditional runoff management practices would be expected to exhibit reduced treatment effectiveness for photoproducts relative to the parent compounds of commonly used trienone steroids.

Graphical abstract: Sorption and transport of trenbolone and altrenogest photoproducts in soil–water systems

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Publication details

The article was received on 28 Jun 2019, accepted on 29 Aug 2019 and first published on 30 Aug 2019


Article type: Paper
DOI: 10.1039/C9EM00305C
Environ. Sci.: Processes Impacts, 2019, Advance Article

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    Sorption and transport of trenbolone and altrenogest photoproducts in soil–water systems

    X. Yang, H. Zhao, D. M. Cwiertny and E. P. Kolodziej, Environ. Sci.: Processes Impacts, 2019, Advance Article , DOI: 10.1039/C9EM00305C

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