Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 1 de 1
Filter
Add more filters










Database
Language
Publication year range
1.
Berl Munch Tierarztl Wochenschr ; 120(3-4): 141-7, 2007.
Article in German | MEDLINE | ID: mdl-17416137

ABSTRACT

Estrogens of human and animal origin that reach the aquatic environment may enter human or animal organism and act as endocrine disruptors.To investigate the persistency of estrogens in laboratory experiments, estrone respectively 17beta-estradiol were added to stream water sampled from river Spree in Berlin. The concentration of estrone and 17beta-estradiol was quantified using enzyme-immuno-assay. The estrone concentration decreased to less than 5 % of the starting concentration at storage temperature of 5 degrees C within 56 days and at storage temperature of 20 degrees C within 14 days. If the estrone were added to autoclaved stream water, no biodegradation was observed. Biodegradation was enhanced when activated sludge was added. Escherichia coli, Pseudomonas fluorenscens and Aeromonas hydrophila in monoculture did not degrade estrone in autoclaved stream water. The concentrations of 17beta-estradiol and estrone decreased similarly. The logistic function proved to be suitable to describe the course of time for the decrease of concentration.


Subject(s)
Bacteria/metabolism , Estrogens/metabolism , Waste Disposal, Fluid/methods , Water Microbiology , Water Pollutants/metabolism , Animals , Berlin , Biodegradation, Environmental , Estradiol/metabolism , Estrone/metabolism , Humans , Sewage/microbiology , Temperature , Time Factors
SELECTION OF CITATIONS
SEARCH DETAIL
...