caa a22 4500 378861638 CHVBK 20180305123348.0 cr unu---uuuuu 161128e20030101xx s 000 0 eng 10.1351/pac200375111859 doi (NATIONALLICENCE)gruyter-10.1351/pac200375111859 Naturally produced steroid hormones and their release into the environment [Elektronische Daten] [L. S. Shore, M. Shemesh] Steroidal hormones produced by humans and animals are constantly excreted into the environment in their active forms. The primary steroid hormones are progesterone, estrone, estradiol, testosterone, and cortisol, all of which are lipophilic and poorly soluble in water. The steroids of major concern are estrone and estradiol-17β, since they exert their physiological effects at a lower concentration than other steroids and can be found in the environment in concentrations above their LOEL for fish and plants (10 ng/l). The steroid hormones can be readily measured in run-off, soil, and groundwater, but each steroid has its distinct pathway of transport. Since the major source of steroids in the environment appears to be cattle and chickens, the hormonal steroid input into the environment could be drastically reduced by well-established techniques such as buffer strips and composting. © 2013 Walter de Gruyter GmbH, Berlin/Boston Shore L. S. Kimron Veterinary Institute, P.O.Box 12, Bet Dagan, Israel aut Shemesh M. Kimron Veterinary Institute, P.O.Box 12, Bet Dagan, Israel aut Pure and Applied Chemistry De Gruyter 75/11-12(2003-01-01), 1859-1871 0033-4545 75:11-12<1859 2003 75 pac https://doi.org/10.1351/pac200375111859 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1351/pac200375111859 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shore L. S. Kimron Veterinary Institute, P.O.Box 12, Bet Dagan, Israel aut NATIONALLICENCE 700 1- Shemesh M. Kimron Veterinary Institute, P.O.Box 12, Bet Dagan, Israel aut NATIONALLICENCE 773 0- Pure and Applied Chemistry De Gruyter 75/11-12(2003-01-01), 1859-1871 0033-4545 75:11-12<1859 2003 75 pac CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter