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000009702 0247_ $$2DOI$$a10.2134/jeq2009.0001
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000009702 084__ $$2WoS$$aEnvironmental Sciences
000009702 1001_ $$0P:(DE-Juel1)VDB36636$$aWehrhan, A.$$b0$$uFZJ
000009702 245__ $$aLong-Term Sorption and Desorption of Sulfadiazine in Soil: Experiments and Modeling
000009702 260__ $$aMadison, Wis.$$bASA [u.a.]$$c2010
000009702 300__ $$a654 - 666
000009702 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000009702 440_0 $$03300$$aJournal of Environmental Quality$$v39$$x0047-2425$$y2
000009702 500__ $$aRecord converted from VDB: 12.11.2012
000009702 520__ $$aAntibiotics, such as sulfadiazine (SDZ), may enter arable soil by spreading of manure of medicated husbandry or directly by the excrement of grazing animals. Knowledge of the fate of antibiotics in soils is crucial for assessing the environmental risk of these compounds, including possible transport to ground water. Kinetic sorption of (14)C-labeled SDZ (4-amino-N-pyrimidin-2-yl-benzenesulfonamide) was investigated using the batch technique. The batch sorption-desorption experiments were conducted at various concentration levels (0.044-13 mg L(-1) initial solute concentration) and time scales (0.75-272 d). Sorption of (14)C-SDZ in the investigated silty loam was time dependent and strongly nonlinear in the solution phase concentration. The time to reach an apparent sorption equilibrium was about 20 d. However, desorption was very slow, and 41 d were insufficient to reach the desorption equilibrium. An inverse modeling technique was used to identify relevant sorption processes of (14)C-SDZ during the batch experiments. Among the investigated two- and three-domain sorption models, adsorption and desorption of (14)C-SDZ were best described with a new model defining two sorption domains and four parameters. Whereas sorption in the first sorption domain was nonlinear and instantaneous, solute uptake in the second sorption domain was rate limited following first-order kinetics. Desorption followed the same rate law until an equilibrium distribution was reached. After that, desorption was assumed to be impossible due to partly irreversible sorption. Although the proposed model needs further validation, it contributes to the discussion on complex sorption processes of organic chemicals in soils.
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000009702 588__ $$aDataset connected to Web of Science, Pubmed
000009702 650_2 $$2MeSH$$aAdsorption
000009702 650_2 $$2MeSH$$aAnti-Infective Agents: chemistry
000009702 650_2 $$2MeSH$$aModels, Chemical
000009702 650_2 $$2MeSH$$aSoil: analysis
000009702 650_2 $$2MeSH$$aSulfadiazine: chemistry
000009702 650_7 $$00$$2NLM Chemicals$$aAnti-Infective Agents
000009702 650_7 $$00$$2NLM Chemicals$$aSoil
000009702 650_7 $$068-35-9$$2NLM Chemicals$$aSulfadiazine
000009702 650_7 $$2WoSType$$aJ
000009702 7001_ $$0P:(DE-HGF)0$$aStreck, T.$$b1
000009702 7001_ $$0P:(DE-Juel1)129462$$aGroeneweg, J.$$b2$$uFZJ
000009702 7001_ $$0P:(DE-Juel1)129549$$aVereecken, H.$$b3$$uFZJ
000009702 7001_ $$0P:(DE-Juel1)VDB724$$aKasteel, R.$$b4$$uFZJ
000009702 773__ $$0PERI:(DE-600)2050469-X$$a10.2134/jeq2009.0001$$gVol. 39, p. 654 - 666$$p654 - 666$$q39<654 - 666$$tJournal of environmental quality$$v39$$x0047-2425$$y2010
000009702 8567_ $$uhttp://dx.doi.org/10.2134/jeq2009.0001
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000009702 9141_ $$y2010
000009702 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
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000009702 9201_ $$0I:(DE-82)080011_20140620$$gJARA$$kJARA-ENERGY$$lJülich-Aachen Research Alliance - Energy$$x2
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