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000015723 0247_ $$2DOI$$a10.1021/es200326t
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000015723 084__ $$2WoS$$aEngineering, Environmental
000015723 084__ $$2WoS$$aEnvironmental Sciences
000015723 1001_ $$0P:(DE-HGF)0$$aRosendahl, I.$$b0
000015723 245__ $$aDissipation and sequestration of the veterinary antibiotic sulfadiazine and its metabolites under field conditions
000015723 260__ $$aColumbus, Ohio$$bAmerican Chemical Society$$c2011
000015723 300__ $$a5216 - 5222
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000015723 440_0 $$01865$$aEnvironmental Science and Technology$$v45$$x0013-936X$$y12
000015723 500__ $$3POF3_Assignment on 2016-02-29
000015723 500__ $$aWe thank Marisa Guttler for her great help in the lab, the team of the Frankenforst agricultural research station for providing their facilities for manure production, and Herbert Rutzel for supporting the field work. We furthermore thank Vetoquinol Biowet (Gorzow Wielkopolski, Poland) for preparing the SDZ injection solution, and our colleagues of the research unit FOR 566 for practical help during sampling campaigns and inspiring discussions of the results. This project was funded by the German Research Foundation (DFG) within the Research Unit FOR 566 "Veterinary medicines in soil: basic research for risk assessment" (AM 134/6-3).
000015723 520__ $$aVeterinary antibiotics introduced into the environment may change the composition and functioning of soil microbial communities and promote the spreading of antibiotic resistance. Actual risks depend on the antibiotic's persistence and (bio)accessibility, which may differ between laboratory and field conditions. We examined the dissipation and sequestration of sulfadiazine (SDZ) and its main metabolites in soil under field conditions and how it was influenced by temperature, soil moisture, plant roots, and soil aggregation compared to controlled laboratory experiments. A sequential extraction accounted for easily extractable (CaCl₂-extractable) and sequestered (microwave-extractable, residual) SDZ fractions. Dissipation from both fractions was largely temperature-dependent and could be well predicted from laboratory data recorded at different temperatures. Soil moisture additionally seemed to control sequestration, being accelerated in dry soil. Sequestration, as indicated by increasing apparent distribution coefficients and decreasing rates of kinetic release into CaCl₂, governed the antibiotic's long-term fate in soil. Besides, we observed spatial gradients of antibiotic concentrations across soil aggregates and in the vicinity of roots. The former were short-lived and equilibrated due to aggregate reorganization, while dissipation of the easily extractable fraction was accelerated near roots throughout the growth period. There was little if any impact of the plants on residual SDZ concentrations.
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000015723 650_2 $$2MeSH$$aAnti-Bacterial Agents: isolation & purification
000015723 650_2 $$2MeSH$$aBiodegradation, Environmental
000015723 650_2 $$2MeSH$$aEnvironmental Monitoring
000015723 650_2 $$2MeSH$$aEnvironmental Remediation: methods
000015723 650_2 $$2MeSH$$aRhizosphere
000015723 650_2 $$2MeSH$$aSoil: chemistry
000015723 650_2 $$2MeSH$$aSulfadiazine: analogs & derivatives
000015723 650_2 $$2MeSH$$aSulfadiazine: isolation & purification
000015723 650_2 $$2MeSH$$aVeterinary Drugs: analogs & derivatives
000015723 650_2 $$2MeSH$$aVeterinary Drugs: isolation & purification
000015723 650_2 $$2MeSH$$aZea mays: metabolism
000015723 650_7 $$00$$2NLM Chemicals$$aAnti-Bacterial Agents
000015723 650_7 $$00$$2NLM Chemicals$$aSoil
000015723 650_7 $$00$$2NLM Chemicals$$aVeterinary Drugs
000015723 650_7 $$068-35-9$$2NLM Chemicals$$aSulfadiazine
000015723 650_7 $$2WoSType$$aJ
000015723 7001_ $$0P:(DE-HGF)0$$aSiemens, J.$$b1
000015723 7001_ $$0P:(DE-Juel1)129462$$aGroeneweg, J.$$b2$$uFZJ
000015723 7001_ $$0P:(DE-HGF)0$$aLinzbach, E.$$b3
000015723 7001_ $$0P:(DE-HGF)0$$aLaabs, V.$$b4
000015723 7001_ $$0P:(DE-HGF)0$$aHerrmann, C.$$b5
000015723 7001_ $$0P:(DE-Juel1)129549$$aVereecken, H.$$b6$$uFZJ
000015723 7001_ $$0P:(DE-HGF)0$$aAmelung, W.$$b7
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000015723 8567_ $$uhttp://dx.doi.org/10.1021/es200326t
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