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Reference type: Journal
Authors: Wang T, Tong J, Sun ML, Chen LG
Article Title: Fast and selective extraction of chloramphenicol from soil by matrix solid-phase dispersion using molecularly imprinted polymer as dispersant.
Publication date: 2011
Journal: Journal of Separation Science
Volume: 34
Issue: (15)
Page numbers: 1886-1892.
DOI: 10.1002/jssc.201100046

Abstract: Abstract: The molecularly imprinted polymer (MIP) was synthesized and used as dispersant of matrix solid-phase dispersion (MSPD) for the extraction of chloramphenicol (CAP) in soil samples. The satisfactory recovery of CAP was obtained by the optimized extraction conditions: 1:2 as the ratio of sample to MIPs; 5 min as the dispersion time; 30% aqueous methanol as washing solvent and methanol as elution solvent. The CAP extracted from soil was determined by LC-MS/MS. The slight ion suppression phenomenon was observed for the CAP when the sample was cleaned up by MSPD with MIP as dispersant, when compared with C18 as MSPD dispersant, which caused significant ion suppression. LOD of CAP is 4.1 ng/g. RSDs of intra- and inter-day tests ranging from 3.1 to 6.2% and from 3.9 to 8.3% are obtained. At all three fortified levels (20, 100 and 500 ng/g), recoveries of CAP are in the range of 86.9 - 92.6%. The effect of ageing time of spiked soil sample on the CAP recovery was examined. The CAP recovery decreased from 91.0 to 36.9% when the ageing time changed from 1 day to 4 wk
Template and target information: chloramphenicol, CAP
Author keywords: chloramphenicol, LC-MS, MS, Matrix solid-phase dispersion, molecularly imprinted polymer, soil

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