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000052843 084__ $$2WoS$$aAgriculture, Multidisciplinary
000052843 084__ $$2WoS$$aChemistry, Applied
000052843 084__ $$2WoS$$aFood Science & Technology
000052843 1001_ $$0P:(DE-HGF)0$$aLagarde, F.$$b0
000052843 245__ $$aSimultaneous Determination of Ethidimuron, Methabenzthiazuron, and Their Two Major Degradation Products in Soil
000052843 260__ $$aWashington, DC [u.a.]$$bAmerican Chemical Society (ACS)$$c2006
000052843 300__ $$a7450 - 7459
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000052843 440_0 $$03005$$aJournal of Agricultural and Food Chemistry$$v54$$x0021-8561
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000052843 520__ $$aAn analytical method has been developed for the quantification of two herbicides (ethidimuron and methabenzthiazuron) and their two main soil derivatives. This method involves fluidized-bed extraction (FBE) prior to cleanup and analysis by reverse-phase liquid chromatography with UV detection at 282 nm. FBE conditions were established to provide efficient extraction without degradation of the four analytes. (14)C-labeled compounds were used for the optimization of extraction and purification steps and for the determination of related efficiencies. Extraction was optimal using a fexIKA extractor operating at 110 degrees C for three cycles (total time = 95 min) with 75 g of soil and 150 mL of a 60:40 v/v acetone/water mixture. Extracts were further purified on a 500 mg silica SPE cartridge. Separation was performed on a C18 Purosphere column (250 mm x 4 mm i.d.), at 0.8 mL min(-1) and 30 degrees C with an elution gradient made up of phosphoric acid aqueous solution (pH 2.2) and acetonitrile. Calibration curves were found to be linear in the 0.5-50 mg L(-1) concentration range. Besides freshly spiked soil samples, method validation included the analysis of samples with aged residues. Recovery values, determined from spiked samples, were close to 100%. Limits of detection ranged between 2 and 3 microg kg(-1) of dry soil and limits of quantification between 8 and 10 microg kg(-1) of dry soil. An attempt to improve these performances by using fluorescence detection following postcolumn derivatization by orthophthalaldehyde-mercaptoethanol reagent was unsuccessful.
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000052843 588__ $$aDataset connected to Web of Science, Pubmed
000052843 650_2 $$2MeSH$$aBenzothiazoles: analysis
000052843 650_2 $$2MeSH$$aBenzothiazoles: chemistry
000052843 650_2 $$2MeSH$$aChromatography, High Pressure Liquid: methods
000052843 650_2 $$2MeSH$$aHerbicides: analysis
000052843 650_2 $$2MeSH$$aMethylurea Compounds: analysis
000052843 650_2 $$2MeSH$$aMethylurea Compounds: chemistry
000052843 650_2 $$2MeSH$$aPhotolysis
000052843 650_2 $$2MeSH$$aSensitivity and Specificity
000052843 650_2 $$2MeSH$$aSoil: analysis
000052843 650_2 $$2MeSH$$aSolutions
000052843 650_7 $$00$$2NLM Chemicals$$aBenzothiazoles
000052843 650_7 $$00$$2NLM Chemicals$$aHerbicides
000052843 650_7 $$00$$2NLM Chemicals$$aMethylurea Compounds
000052843 650_7 $$00$$2NLM Chemicals$$aSoil
000052843 650_7 $$00$$2NLM Chemicals$$aSolutions
000052843 650_7 $$00$$2NLM Chemicals$$aethidimuron
000052843 650_7 $$018691-97-9$$2NLM Chemicals$$amethabenzthiazuron
000052843 650_7 $$2WoSType$$aJ
000052843 65320 $$2Author$$aethidimuron
000052843 65320 $$2Author$$amethabenzthiazuron
000052843 65320 $$2Author$$ametabolites
000052843 65320 $$2Author$$asoils
000052843 65320 $$2Author$$afexIKA extraction
000052843 65320 $$2Author$$aSPE purification
000052843 65320 $$2Author$$aHPLC-DAD
000052843 65320 $$2Author$$afluorescence
000052843 7001_ $$0P:(DE-Juel1)VDB2346$$aPütz, T.$$b1$$uFZJ
000052843 7001_ $$0P:(DE-HGF)0$$aDressel, J.$$b2
000052843 7001_ $$0P:(DE-Juel1)VDB428$$aFühr, F.$$b3$$uFZJ
000052843 773__ $$0PERI:(DE-600)1483109-0$$a10.1021/jf061042v$$gVol. 54, p. 7450 - 7459$$p7450 - 7459$$q54<7450 - 7459$$tJournal of agricultural and food chemistry$$v54$$x0021-8561$$y2006
000052843 8567_ $$uhttp://hdl.handle.net/2128/798$$uhttp://dx.doi.org/10.1021/jf061042v
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000052843 9141_ $$y2006
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