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This article in JEQ

  1. Vol. 30 No. 6, p. 2077-2080
     
    Received: Oct 16, 2000


    * Corresponding author(s): toppe@em.agr.ca
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doi:10.2134/jeq2001.2077

Persistence of Estrogenic Hormones in Agricultural Soils

  1. Michael S. Colucci and
  2. Edward Topp *
  1. Agriculture and Agri-Food Canada, Research Branch, 1391 Sandford Street, London, ON, Canada N5V 4T3

Abstract

The persistence of 17α-ethynylestradiol in agricultural soil was established in laboratory microcosm studies. The hormone was rapidly dissipated in loam, sandy loam, and silt loam soils under a range of moisture and temperature conditions. Dissipation of 17α-ethynylestradiol correlated closely with removal of total estrogenicity determined with a recombinant yeast bioassay, indicating that extractable estrogenic transformation products did not accumulate. The stability of 17α-ethynylestradiol in sterile soil, decreased removal in the absence of oxygen, and the response of dissipation kinetics to variation in temperature and moisture suggested that the removal was microbially mediated. We conclude that 17α-ethynylestradiol is rapidly dissipated in agricultural soils under a range of conditions typical of a temperate growing season.

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Copyright © 2001. American Society of Agronomy, Crop Science Society of America, Soil Science SocietyPublished in J. Environ. Qual.30:2077–2080.