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Reference type: Journal
Authors: Long CY, Mai ZB, Yang YF, Zhu BH, Xu XM, Lu L, Zou XY
Article Title: Determination of multi-residue for malachite green, gentian violet and their metabolites in aquatic products by high-performance liquid chromatography coupled with molecularly imprinted solid-phase extraction.
Publication date: 2009
Journal: Journal of Chromatography A
Volume: 1216
Issue: (12)
Page numbers: 2275-2281.
DOI: 10.1016/j.chroma.2009.01.047
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-4VDY81K-2/2/8ac6b82e2ec964d3a71a03b3591e2c30

Abstract: A sorbent was synthesized and investigated for molecularly imprinted solid-phase extraction (MISPE). Molecularly imprinted polymers (MIPs) were synthesized via precipitation polymerization procedure, where methacrylic acid (MAA) was used as functional monomer and ethylene glycol dimethacrylate (EDMA) as cross-linking agent. The imprinting effect and selectivity of the MISPE were evaluated by elution experiments. The resulting MISPE showed high extraction selectivity to malachite green, gentian violet and their metabolites, which may be caused by both the ion exchange and the hydrophobic interactions. The determination of multi-residue for malachite green, gentian violet and their metabolites in aquatic products by HPLC coupled with MISPE was also investigated. The mean recoveries calculated by solvent calibration curve for malachite green (MG), gentian violet (GV), leucomalachite green (LMG) and leucogentian violet (LGV) were from 89.8% to 99.1% for grass carp, 90.6% to 101.2% for shrimp and 91.3% to 96.3% for shellfish. The decision limit (CCα) and the detection capability (CCβ) obtained for MG, GV, LMG and LGV were in the range of 0.11-0.14 and 0.19-0.24μgkg-1 for grass carp, shrimp and shellfish. The MISPE was successfully used off-line for the determination of MG, GV and their metabolites in aquatic products
Template and target information: malachite green, MG, gentian violet, GV, leucomalachite green, LMG, leucogentian violet, LGV
Author keywords: Malachite green, Molecularly imprinted polymers, Multi-residue extraction, Aquatic products


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