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000000976 084__ $$2WoS$$aAgriculture, Multidisciplinary
000000976 084__ $$2WoS$$aChemistry, Applied
000000976 084__ $$2WoS$$aFood Science & Technology
000000976 1001_ $$0P:(DE-Juel1)129475$$aJablonowski, N. D.$$b0$$uFZJ
000000976 245__ $$aSpatial Distribution and Characterization of Long-Term Aged 14C-Labeled Atrazine Residues in Soil
000000976 260__ $$aWashington, DC [u.a.]$$bAmerican Chemical Society (ACS)$$c2008
000000976 300__ $$a9548 - 9554
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000000976 440_0 $$03005$$aJournal of Agricultural and Food Chemistry$$v56$$x0021-8561
000000976 500__ $$aWe gratefully acknowledge the help and assistance of the laboratory co-workers, namely Ms. Anita Steffen and Ms. Jessica Bausch, for sample preparation, and Mr. Gfinter Henkelmann, LfL Munich, for the lysimeter soil. Sincere thanks are due to Mr. M. Michulitz, Ms. H. Lippert, and Ms. N. Merki, Forschungszentrum Julich (ZCH), for physicochemical analysis.
000000976 520__ $$aThe long-term behavior of the herbicide atrazine and its metabolites in the environment is of continued interest in terms of risk assessment and soil quality monitoring. Aqueous desorption, detection, and quantification of atrazine and its metabolites from an agriculturally used soil were performed 22 years after the last atrazine application. A lysimeter soil containing long-term aged atrazine for >20 years was subdivided into 10 and 5 cm layers (at the lysimeter bottom: soil 0-50 and 50-55 cm; fine gravel 55-60 cm depth, implemented for drainage purposes) to identify the qualitative and quantitative differences of aged (14)C-labeled atrazine residues depending on the soil profile and chemico-physical conditions of the individual soil layers. Deionized water was used for nonexhaustive cold water shaking extraction of the soil. With increasing soil depth, the amount of previously applied (14)C activity decreased significantly from 8.8% to 0.7% at 55-60 cm depth whereas the percentage of desorbed (14)C residues in each soil layer increased from 2% to 6% of the total (14)C activity in the sample. The only metabolite detectable by means of LC-MS/MS was 2-hydroxyatrazine while most of the residual (14)C activity was bound to the soil and was not desorbed. The amount of desorbed 2-hydroxyatrazine decreased with increasing soil depth from 21% to 10% of the total desorbed (14)C residue fraction. The amount of (14)C residues in the soil layers correlated well with the carbon content in the soil and in the aqueous soil extracts ( p value = 0.99 and 0.97, respectively), which may provide evidence of the binding behavior of the aged atrazine residues on soil carbon. The lowest coarse layer (55-60 cm) showed increased residual (14)C activity leading to the assumption that most (14)C residues were leached from the soil column over time.
000000976 536__ $$0G:(DE-Juel1)FUEK407$$2G:(DE-HGF)$$aTerrestrische Umwelt$$cP24$$x0
000000976 588__ $$aDataset connected to Web of Science, Pubmed
000000976 65320 $$2Author$$aAtrazine
000000976 65320 $$2Author$$ahydroxyatrazine
000000976 65320 $$2Author$$ametabolites
000000976 65320 $$2Author$$aLC-MS/MS
000000976 65320 $$2Author$$aaged residues
000000976 65320 $$2Author$$adesorption
000000976 65320 $$2Author$$aorganic carbon
000000976 650_2 $$2MeSH$$aAtrazine: chemistry
000000976 650_2 $$2MeSH$$aAtrazine: metabolism
000000976 650_2 $$2MeSH$$aBiodegradation, Environmental
000000976 650_2 $$2MeSH$$aCarbon Radioisotopes: analysis
000000976 650_2 $$2MeSH$$aChromatography, Liquid
000000976 650_2 $$2MeSH$$aHerbicides: chemistry
000000976 650_2 $$2MeSH$$aHerbicides: metabolism
000000976 650_2 $$2MeSH$$aSoil: analysis
000000976 650_2 $$2MeSH$$aSoil Pollutants: chemistry
000000976 650_2 $$2MeSH$$aSoil Pollutants: metabolism
000000976 650_2 $$2MeSH$$aTandem Mass Spectrometry
000000976 650_7 $$00$$2NLM Chemicals$$aCarbon Radioisotopes
000000976 650_7 $$00$$2NLM Chemicals$$aHerbicides
000000976 650_7 $$00$$2NLM Chemicals$$aSoil
000000976 650_7 $$00$$2NLM Chemicals$$aSoil Pollutants
000000976 650_7 $$01912-24-9$$2NLM Chemicals$$aAtrazine
000000976 650_7 $$2WoSType$$aJ
000000976 7001_ $$0P:(DE-Juel1)VDB78897$$aKoeppchen, S.$$b1$$uFZJ
000000976 7001_ $$0P:(DE-Juel1)129471$$aHofmann, D.$$b2$$uFZJ
000000976 7001_ $$0P:(DE-HGF)0$$aSchaeffer, A.$$b3
000000976 7001_ $$0P:(DE-Juel1)VDB202$$aBurauel, P.$$b4$$uFZJ
000000976 773__ $$0PERI:(DE-600)1483109-0$$a10.1021/jf8017832$$gVol. 56, p. 9548 - 9554$$n20$$p9548 - 9554$$q56<9548 - 9554$$tJournal of agricultural and food chemistry$$v56$$x0021-8561$$y2008
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