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Reference type: Journal
Authors: Tang KJ, Chen SW, Gu XH, Wang HJ, Dai J, Tang J
Article Title: Preparation of molecularly imprinted solid phase extraction using bensulfuron-methyl imprinted polymer and clean-up for the sulfonylurea-herbicides in soybean.
Publication date: 2008
Journal: Analytica Chimica Acta
Volume: 614
Issue: (1)
Page numbers: 112-118.
DOI: 10.1016/j.aca.2008.03.018
Alternative URL: http://www.sciencedirect.com/science/article/B6TF4-4S2666P-9/1/047f03d9165b21ab971f6d79bb1b2a0b

Abstract: A pre-treatment methodology based on the molecularly imprinted solid phase extraction (MI-SPE) procedure was developed for the determination of bensulfuron-methyl (BSM), tribenuron-methyl (TBM), metsulfuron-methyl (MSM) and nicosulfuron (NS) in soybean samples. A molecular imprinted polymer (MIP) was prepared by precipitation polymerization using BSM as the template molecule, α-methacrylic acid (MAA) as the functional monomer, trimethylolpropane trimethacrylate (TRIM) as the cross-linker and dichloromethane as the porogen. The binding behaviors of the template BSM and its analogues on the MIP were evaluated by high performance liquid chromatography (HPLC). Then, solid phase extraction (SPE) with a BSM molecularly imprinted polymer (BSM-MIP) as adsorbent was investigated and the optimum loading, washing, and eluting conditions for MI-SPE of the selected BSM, MSM, TBM, and NS were established. The optimized MI-SPE procedure was used to extract the sulfonylureas and a high recovery was obtained in the soybean samples
Author keywords: molecularly imprinted solid phase extraction, Bensulfuron-methyl imprinted polymers, Sulfonylurea-herbicides, Soybean

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