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Title of Journal: Environ Monit Assess

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Abbravation: Environmental Monitoring and Assessment

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Springer International Publishing

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1573-2959

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Dissipation kinetics and residues of triazolopyrim

Authors: Mengmeng Zhong Tielong Wang Jiye Hu
Publish Date: 2015/05/31
Volume: 187, Issue: 6, Pages: 390-
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Abstract

The dynamic and residues of florasulam and flumetsulam in corn field ecosystem were investigated using quick easy cheap effective rugged and safe QuEChERS procedure with highperformance liquid chromatographytandem mass spectrometry HPLCMS/MS The limits of quantification LOQs of the proposed method ranged from 0005 to 001 mg/kg Mean recoveries and relative standard deviations RSDs of the two compounds in all samples at three spiking levels ranged 94–110  and 20–92  respectively Florasulam and flumetsulam degradation followed firstorder kinetics with halflives 17–29 and 33–87 days in soil and 13–18 and 09–17 days in plant respectively The residues in all the samples were found to be less than the LOQs at preharvest intervals of 53 and 78 days The results suggest that the combined use of florasulam and flumetsulam on corn is considered to be safe under the recommended conditions and can be utilized for establishing the maximum residue limit MRL of florasulam in corn in China

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