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000044720 0247_ $$2DOI$$a10.1016/j.envpol.2004.10.018
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000044720 084__ $$2WoS$$aEnvironmental Sciences
000044720 1001_ $$0P:(DE-Juel1)VDB9230$$aSéquaris, J.-M.$$b0$$uFZJ
000044720 245__ $$aEquilibrium partitioning of 14C-benzo(a)pyrene and 14C-benazolin between fractionated phases from an arable topsoil
000044720 260__ $$aAmsterdam [u.a.]$$bElsevier Science$$c2005
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000044720 440_0 $$08083$$aEnvironmental Pollution$$v135$$x0269-7491
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000044720 520__ $$aEquilibrium partitioning of hydrophobic (14)C-benzo(a)pyrene and hydrophilic (14)C-benazolin between fractionated phases from an arable topsoil of Merzenhausen (Germany) was investigated. Topsoil samples were collected from lysimeters which were incubated with different residual crops. A physical soil fractionation based on sedimentation and centrifugation steps was performed after water extraction. Four soil phases were obtained designated sediment (SED) phase (>20 microm), microaggregate (MA) phase (2 microm-20 microm), colloid (COL) phase (<2 microm) and electrolyte (EL) phase. The distribution of (14)C-benzo(a)pyrene, (14)C-benazolin and organic carbon between the soil phases was established. Enrichment factors for the two chemicals and organic carbon are higher in the COL and MA phases than in the SED phase. The distribution constant K(d) of chemicals for Merzenhausen topsoil was calculated according to two-phase or three-phase partitioning models. The three-phase partitioning model presumes the contribution of the organic carbon for the binding of chemicals. A log K(oc) of 5.55 can be calculated in the case of (14)C-benzo(a)pyrene, which is typical of the hydrophobic association with the soil organic carbon. In the case of (14)C-benazolin, much higher K(d) and K(oc) values were calculated than found with parent molecules after short-time experiments. Long-term aging processes must be considered. Specific effects on the chemical distribution due to the different crop residues were not detected.
000044720 536__ $$0G:(DE-Juel1)FUEK257$$2G:(DE-HGF)$$aChemie und Dynamik der Geo-Biosphäre$$cU01$$x0
000044720 588__ $$aDataset connected to Web of Science, Pubmed
000044720 650_2 $$2MeSH$$aAdsorption
000044720 650_2 $$2MeSH$$aBenzo(a)pyrene: chemistry
000044720 650_2 $$2MeSH$$aCarbon Radioisotopes
000044720 650_2 $$2MeSH$$aChemical Fractionation: methods
000044720 650_2 $$2MeSH$$aGermany
000044720 650_2 $$2MeSH$$aImidazoles: chemistry
000044720 650_2 $$2MeSH$$aMathematics
000044720 650_2 $$2MeSH$$aModels, Chemical
000044720 650_2 $$2MeSH$$aSoil Pollutants: analysis
000044720 650_7 $$00$$2NLM Chemicals$$aCarbon Radioisotopes
000044720 650_7 $$00$$2NLM Chemicals$$aImidazoles
000044720 650_7 $$00$$2NLM Chemicals$$aSoil Pollutants
000044720 650_7 $$017692-22-7$$2NLM Chemicals$$ametizoline
000044720 650_7 $$050-32-8$$2NLM Chemicals$$aBenzo(a)pyrene
000044720 650_7 $$2WoSType$$aJ
000044720 65320 $$2Author$$aorganic chemicals
000044720 65320 $$2Author$$asoil phases
000044720 65320 $$2Author$$aequilibrium partitioning models
000044720 65320 $$2Author$$acrop residues
000044720 7001_ $$0P:(DE-HGF)0$$aLavorenti, A.$$b1
000044720 7001_ $$0P:(DE-Juel1)VDB202$$aBurauel, P.$$b2$$uFZJ
000044720 773__ $$0PERI:(DE-600)2013037-5$$a10.1016/j.envpol.2004.10.018$$gVol. 135, p. 491 - 500$$p491 - 500$$q135<491 - 500$$tEnvironmental pollution$$v135$$x0269-7491$$y2005
000044720 8567_ $$uhttp://dx.doi.org/10.1016/j.envpol.2004.10.018
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