Journal
ENVIRONMENTAL POLLUTION
Volume 158, Issue 1, Pages 148-154Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.07.027
Keywords
DOC; Organic waste; Estrogen; Sorption; Mineralization
Categories
Funding
- DFG (Deutsche Forschungsgemeinschaft)
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In this study, effects of sewage sludge and manure borne dissolved organic carbon (DOC) on 17 beta-estradiol (E2) and 17 alpha-ethinylestradiol (EE2) sorption and mineralization processes were investigated in three agricultural soils. Batch equilibrium techniques and equilibrium dialysis methods were used to determine sorption mechanisms between DOC, estrogens and the soil solid phase. It was found that that the presence of organic waste borne DOC decreased estrogen sorption in soils which seems to be controlled by DOC/estrogen complexes in solution and by exchange processes between organic waste derived and soil borne DOC. Incubation studies performed with C-14-estrogens showed that DOC addition decreased estrogen mineralization, probably due to reduced bioavailability of estrogens associated with DOC. This increased persistence combined with higher mobility could increase the risk of estrogen transport to ground and surface waters. (C) 2009 Elsevier Ltd. All rights reserved.
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